diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0f8039e820094bb9b31cec212c6acb2136e1a3e6..01bbc238b7290b04b256db2f2b82ab0cd6d74cd9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,3 +1,22 @@
+##
+## PeTrack - Software for tracking pedestrians movement in videos
+## Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+## Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+## Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
+## the Free Software Foundation, either version 3 of the License, or
+## (at your option) any later version.
+##
+## This program is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+## GNU General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with this program.  If not, see <https://www.gnu.org/licenses/>.
+##
 stages:
   - build_environment
   - build
diff --git a/LICENSE b/LICENSE
index db3402aa63fb8e1e7a2c341091d0755bdb351490..f288702d2fa16d3cdf0035b15a9fcbc552cd88e7 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,3 +1,674 @@
-The software PeTrack is free.
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
 
-This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
\ No newline at end of file
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+  No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+  4. Conveying Verbatim Copies.
+
+  You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+  5. Conveying Modified Source Versions.
+
+  You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/ReadMe.md b/ReadMe.md
index b37f08c111ccd032d6d50fcc307c386123cd30b8..6b7fd31e4075f3334ffec12c53f47197a3f547a7 100644
--- a/ReadMe.md
+++ b/ReadMe.md
@@ -31,6 +31,9 @@ with saving the project to project.pet again:
 petrack.exe -project project.pet -sequence frame000.jpg -autoTrack tracker_file -autoSave project.pet
 ```
 
+## License
+This project is licensed under the terms of the GPLv3 license. For further information see [LICENSE](./LICENSE).
+
 ## Changelog:
 v0.8 : slanted view for external calibration, coordinate system and grid is possible, introduced multicolor marker with black dot, video support for various codecs <br/>
 v0.7 : introduce stereo cameras; alternate height <br/>
diff --git a/include/analysePlot.h b/include/analysePlot.h
index 4555dc566e265dbf020578f90d1246c061e60ea5..6fb098f75762242acdacaf658db4cd6b84a54224 100644
--- a/include/analysePlot.h
+++ b/include/analysePlot.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef ANALYSEPLOT_H
 #define ANALYSEPLOT_H
 
diff --git a/include/animation.h b/include/animation.h
index a6af99533d8b91a4ae96ed551a0aeeb131516daf..4d8885fa85a7f0d84afdcb03a2d6a27480b96807 100644
--- a/include/animation.h
+++ b/include/animation.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 /*
 
 Class Animation
diff --git a/include/autoCalib.h b/include/autoCalib.h
index 248a56a88195d87d8829a3733cb403ad01f5e2d9..635a83c8fedec7924f62b967ad7055983aeb9426 100644
--- a/include/autoCalib.h
+++ b/include/autoCalib.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef AUTOCALIB_H
 #define AUTOCALIB_H
 
diff --git a/include/aviFileWriter.h b/include/aviFileWriter.h
index 5cc75ad46279bbc8dadef6854473ac219059e8d3..3462253ee2239de130d977271ae5900f67e7d727 100644
--- a/include/aviFileWriter.h
+++ b/include/aviFileWriter.h
@@ -1,3 +1,22 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
 
 #undef UNICODE
 
diff --git a/include/backgroundFilter.h b/include/backgroundFilter.h
index 77c30b9cf0b44ecb961c35e851ff8feb4fefc034..ca0f5bbe3ea4ec7cf62254ca9f8a7b088eceed45 100644
--- a/include/backgroundFilter.h
+++ b/include/backgroundFilter.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef BACKGROUNDFILTER_H
 #define BACKGROUNDFILTER_H
 
diff --git a/include/backgroundItem.h b/include/backgroundItem.h
index 86cb8ee5e452bc58ab0aa5b9748e4b534e6083c3..3d08928ab0791c4fcc79401a6533b00fd1f47142 100644
--- a/include/backgroundItem.h
+++ b/include/backgroundItem.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef BACKGROUNDITEM_H
 #define BACKGROUNDITEM_H
 
diff --git a/include/blurFilter.h b/include/blurFilter.h
index 65ffceca2e53be3702cf435e9c530aa419dcc01c..71e78617c22c801454434b35e627a644a7d837c5 100644
--- a/include/blurFilter.h
+++ b/include/blurFilter.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef BLURFILTER_H
 #define BLURFILTER_H
 
diff --git a/include/borderFilter.h b/include/borderFilter.h
index 8e658fd25de4252a322e3bb5fb3c933058df71f3..6b23a62fc5f716b7482a1b71e447081f1fb6f4d2 100644
--- a/include/borderFilter.h
+++ b/include/borderFilter.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef BORDERFILTER_H
 #define BORDERFILTER_H
 
diff --git a/include/brightContrastFilter.h b/include/brightContrastFilter.h
index 1ade1af2ead68eb42f94f108887cb23d79c4f356..8ce1a98941bf0ad6a0b035917b9225c4e28cc6cc 100644
--- a/include/brightContrastFilter.h
+++ b/include/brightContrastFilter.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef BRIGHTCONTRASTFILTER_H
 #define BRIGHTCONTRASTFILTER_H
 
diff --git a/include/brightFilter.h b/include/brightFilter.h
index a930b1ffc2f748b2187a3aca3d0ec1c1ac5269d2..e82e41fcc74aae1556c5404aade56c0fe89a021e 100644
--- a/include/brightFilter.h
+++ b/include/brightFilter.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef BRIGHTFILTER_H
 #define BRIGHTFILTER_H
 
diff --git a/include/calibFilter.h b/include/calibFilter.h
index 7bb292c0db829c1c616253ad949ade326b68f6f7..19b391446ab36aff42961d430b75337a894bbf67 100644
--- a/include/calibFilter.h
+++ b/include/calibFilter.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef CALIBFILTER_H
 #define CALIBFILTER_H
 
diff --git a/include/calibStereoFilter.h b/include/calibStereoFilter.h
index 4af96fed4daf692e11b8b70c5ee6e5775fc7fbbf..0535df6ecc3625274c83b0701274f7216faafbf2 100644
--- a/include/calibStereoFilter.h
+++ b/include/calibStereoFilter.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef CALIBSTEREOFILTER_H
 #define CALIBSTEREOFILTER_H
 
diff --git a/include/codeMarkerItem.h b/include/codeMarkerItem.h
index 1fd656651ffd292169faac7bac9f0ccd1c753d18..6fb7c2a30baf90932d2a56f7e069560243f00a54 100644
--- a/include/codeMarkerItem.h
+++ b/include/codeMarkerItem.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef CodeMarkerItem_H
 #define CodeMarkerItem_H
 
diff --git a/include/codeMarkerWidget.h b/include/codeMarkerWidget.h
index e2b4b2813d4d590032ea50d6e90f063ca9c81ed2..1560f27dc1d4c16a1b3aeeb83c1479f2c46f701a 100644
--- a/include/codeMarkerWidget.h
+++ b/include/codeMarkerWidget.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef CODEMARKERWIDGET_H
 #define CODEMARKERWIDGET_H
 
diff --git a/include/colorMarkerItem.h b/include/colorMarkerItem.h
index 562c6578f8d5d6b261b3ed6bfbadc71bdc3160e9..d3cbd33c0765f70d5578548837eb0063a90fa323 100644
--- a/include/colorMarkerItem.h
+++ b/include/colorMarkerItem.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef ColorMarkerItem_H
 #define ColorMarkerItem_H
 
diff --git a/include/colorMarkerWidget.h b/include/colorMarkerWidget.h
index eba6fe5dde400a7ca2fe4a128c2abf3e408b269a..b5c0d7c6b1181f8a65c2eb8be743d676ec2cbe04 100644
--- a/include/colorMarkerWidget.h
+++ b/include/colorMarkerWidget.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef COLORMARKERWIDGET_H
 #define COLORMARKERWIDGET_H
 
diff --git a/include/colorPlot.h b/include/colorPlot.h
index b59fac8439fc44339c8f9c925d1351aec58e7955..46c289d0f4611f3df3006ec3e8080a2d5fccdfc4 100644
--- a/include/colorPlot.h
+++ b/include/colorPlot.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef COLORPLOT_H
 #define COLORPLOT_H
 
diff --git a/include/colorRangeWidget.h b/include/colorRangeWidget.h
index ce8c747b2795eef30b701d58480d0c5c74e9318a..b347f1a2818a9f2c29726bb1d91a1e07dcabc844 100644
--- a/include/colorRangeWidget.h
+++ b/include/colorRangeWidget.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef COLORRANGEWIDGET_H
 #define COLORRANGEWIDGET_H
 
diff --git a/include/contrastFilter.h b/include/contrastFilter.h
index 88431504ce83db81f2f7ebc80d0a4be3c73ae165..10f72d1d5b733e3db6d483a7f87dd3599c25b187 100644
--- a/include/contrastFilter.h
+++ b/include/contrastFilter.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef CONTRASTFILTER_H
 #define CONTRASTFILTER_H
 
diff --git a/include/control.h b/include/control.h
index 5f52fb72fff03402effcdc668c834be6ff92e598..e5c45a860f333d3318ca38805d005c311a1ce081 100644
--- a/include/control.h
+++ b/include/control.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef CONTROL_H
 #define CONTROL_H
 
diff --git a/include/coordItem.h b/include/coordItem.h
index 86b8ea68d61f3d119e0443b5ce57e592ec0a5067..8908e04060cf3325a91348492d33c751e11140ba 100644
--- a/include/coordItem.h
+++ b/include/coordItem.h
@@ -1,4 +1,24 @@
-#ifndef COORDITEM_H
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef COORDITEM_H
 #define COORDITEM_H
 
 #include <QGraphicsItem>
diff --git a/include/ellipse.h b/include/ellipse.h
index 3f50721d20b2499f2acaec0a2d945189e9ee8d60..d567918e8a3a66fe2609996d8a8bce7589bd5780 100644
--- a/include/ellipse.h
+++ b/include/ellipse.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef ELLIPSE_H
 #define ELLIPSE_H
 
diff --git a/include/extrCalibration.h b/include/extrCalibration.h
index 9e5db71e55227d3b00b6a33c9bad2427a22b75bd..092b7830e43881008187438d2ce6bb92fba700a2 100644
--- a/include/extrCalibration.h
+++ b/include/extrCalibration.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef EXTRCALIBRATION_H
 #define EXTRCALIBRATION_H
 
diff --git a/include/filter.h b/include/filter.h
index 3dabd9ab4556159c907d3cd082e217b49934e95b..67bc0f53e02dc117fc90020a334be9a9f1b092d8 100644
--- a/include/filter.h
+++ b/include/filter.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef FILTER_H
 #define FILTER_H
 
diff --git a/include/gridItem.h b/include/gridItem.h
index c936ba5520be0cff0a6c7b08b69a86bf82088a92..5bd84bfcd33854c3382bc41ecf682dd8e23a05f4 100644
--- a/include/gridItem.h
+++ b/include/gridItem.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef GRIDITEM_H
 #define GRIDITEM_H
 
diff --git a/include/helper.h b/include/helper.h
index 68f07c4b64bcc9872d6f05fa267426fc997c35c3..b3036c9ab11f3563d561b92739ea6819ad74c960 100644
--- a/include/helper.h
+++ b/include/helper.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef HELPER_H
 #define HELPER_H
 
diff --git a/include/imageItem.h b/include/imageItem.h
index 15985c6d527197d379cb3aadaaf2b65fddc003bd..4f103c6465bd58134d3a9b648d1bc836292225c6 100644
--- a/include/imageItem.h
+++ b/include/imageItem.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef IMAGEITEM_H
 #define IMAGEITEM_H
 
diff --git a/include/logoItem.h b/include/logoItem.h
index ddcb1e9afef6bfa236b0c4ca88b31376e0df3f78..8aa2756ce81b071b719d49609b24425ea9be4161 100644
--- a/include/logoItem.h
+++ b/include/logoItem.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef LOGOITEM_H
 #define LOGOITEM_H
 
diff --git a/include/markerCasern.h b/include/markerCasern.h
index 1eb6157f32285a68c24b1f3635be86854caca6d0..d4a542480855d6aa5327d45e6d04bc2db39e365f 100644
--- a/include/markerCasern.h
+++ b/include/markerCasern.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef MARKERCASERN_H
 #define MARKERCASERN_H
 
diff --git a/include/markerColor.h b/include/markerColor.h
index 4acbffcd6245aab3775b8e9527e076d9b1d62f5b..2ea6d62840f1673f511e9ce1dc774f27e3ec7bed 100644
--- a/include/markerColor.h
+++ b/include/markerColor.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef MARKERCOLOR_H
 #define MARKERCOLOR_H
 
diff --git a/include/markerHermes.h b/include/markerHermes.h
index 8d96da4a132e46d5d972e3a232f8000117726432..aba58823b7fa64473d9e128b1f8d866bdb9f45cb 100644
--- a/include/markerHermes.h
+++ b/include/markerHermes.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef MARKERHERMES_H
 #define MARKERHERMES_H
 
diff --git a/include/markerJapan.h b/include/markerJapan.h
index 552092a7deeb6738b1c37f14549aa08604585ea2..3b61f04651b372b0728aa97d132ec63dee3f7c74 100644
--- a/include/markerJapan.h
+++ b/include/markerJapan.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef MarkerJapan_H
 #define MarkerJapan_H
 
diff --git a/include/multiColorMarkerItem.h b/include/multiColorMarkerItem.h
index 7195d2a7c45d0f3e071a01867c5022c3b908604f..c897454e3096634273fe4d2d6dd61325a1e6fa84 100644
--- a/include/multiColorMarkerItem.h
+++ b/include/multiColorMarkerItem.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef MultiColorMarkerItem_H
 #define MultiColorMarkerItem_H
 
diff --git a/include/multiColorMarkerWidget.h b/include/multiColorMarkerWidget.h
index 7876d1b20d521240a56c18219325ab472dcdf242..52ce70ff5a32c24cfccc259df09d3f1263b1aeb9 100644
--- a/include/multiColorMarkerWidget.h
+++ b/include/multiColorMarkerWidget.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef MULTICOLORMARKERWIDGET_H
 #define MULTICOLORMARKERWIDGET_H
 
diff --git a/include/person.h b/include/person.h
index c81b1b5ab1863c56e3eb91f2306a9f67c827d9e9..5bb71cd7b83e2504ae78cbe7efade7c04f2c4119 100644
--- a/include/person.h
+++ b/include/person.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef PERSON_H
 #define PERSON_H
 
diff --git a/include/petrack.h b/include/petrack.h
index 560c7f2abb3c5712ab1c6e394f37bbae539001c2..0ab8494ecf7fcf749c9ccfb029e9aba0773db676 100644
--- a/include/petrack.h
+++ b/include/petrack.h
@@ -1,4 +1,24 @@
-#ifndef PETRACK_H
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef PETRACK_H
 #define PETRACK_H
 
 #include <QMainWindow>
diff --git a/include/player.h b/include/player.h
index 46a09e2b4593599c7249646cf2a87e45bf9d6d11..ac3d1be281035ce4688fe7820b5dfb8322f5fea9 100644
--- a/include/player.h
+++ b/include/player.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef PLAYER_H
 #define PLAYER_H
 
diff --git a/include/qtColorTriangle.h b/include/qtColorTriangle.h
index e690d185b43689d542e4284413c1cb61f3970ba8..c89faf39573b99459f203bca7df8814b10984fc5 100644
--- a/include/qtColorTriangle.h
+++ b/include/qtColorTriangle.h
@@ -1,17 +1,17 @@
 /****************************************************************************
-** 
+**
 ** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
-** 
+**
 ** This file is part of a Qt Solutions component.
 **
-** Commercial Usage  
+** Commercial Usage
 ** Licensees holding valid Qt Commercial licenses may use this file in
 ** accordance with the Qt Solutions Commercial License Agreement provided
 ** with the Software or, alternatively, in accordance with the terms
 ** contained in a written agreement between you and Nokia.
-** 
+**
 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 2.1 as published by the Free Software
@@ -19,29 +19,29 @@
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU Lesser General Public License version 2.1 requirements
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-** 
+**
 ** In addition, as a special exception, Nokia gives you certain
 ** additional rights. These rights are described in the Nokia Qt LGPL
 ** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
 ** package.
-** 
-** GNU General Public License Usage 
+**
+** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3.0 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU General Public License version 3.0 requirements will be
 ** met: http://www.gnu.org/copyleft/gpl.html.
-** 
+**
 ** Please note Third Party Software included with Qt Solutions may impose
 ** additional restrictions and it is the user's responsibility to ensure
 ** that they have met the licensing requirements of the GPL, LGPL, or Qt
 ** Solutions Commercial license and the relevant license of the Third
 ** Party Software they are using.
-** 
+**
 ** If you are unsure which license is appropriate for your use, please
 ** contact Nokia at qt-info@nokia.com.
-** 
+**
 ****************************************************************************/
 
 // siehe fuer Doku: http://docs.huihoo.com/qt/solutions/4/qtcolortriangle/qtcolortriangle.html
diff --git a/include/recognition.h b/include/recognition.h
index 4083367c9b4f0f926851a2a9db8873f30df14c3f..568452ad182f5c02684e53011f546aab943a8183 100644
--- a/include/recognition.h
+++ b/include/recognition.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef RECOGNITION_H
 #define RECOGNITION_H
 
diff --git a/include/recognitionRoiItem.h b/include/recognitionRoiItem.h
index b2f63e0b6a9a1c28eae1c00ac9e1a4beb6e281a9..bb2750a85d6c68b5711e8e2823dd85b831981756 100644
--- a/include/recognitionRoiItem.h
+++ b/include/recognitionRoiItem.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef RECOGNITIONROIITEM_H
 #define RECOGNITIONROIITEM_H
 
diff --git a/include/stereoAviFile.h b/include/stereoAviFile.h
index de7b14010aad036ebbabb7cb95f39d308bb2fe41..74df05550bf074972a1f49a712b7714fb14581f9 100644
--- a/include/stereoAviFile.h
+++ b/include/stereoAviFile.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef STEREO_DISABLED
 #ifndef STEREOAVIFILE_H
 #define STEREOAVIFILE_H
diff --git a/include/stereoContext.h b/include/stereoContext.h
index 65cf8e8532a84a056aa9b3d2296a83300df61408..289000793bfad99173e1c6f0a0b4266e346e8184 100644
--- a/include/stereoContext.h
+++ b/include/stereoContext.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef STEREOCONTEXT_H
 #define STEREOCONTEXT_H
 
diff --git a/include/stereoItem.h b/include/stereoItem.h
index 0725e96f32a6e789ef8c2aa72b49b894a2698c3e..41c28b3e48029bcc94223cf187c1e9571673ae26 100644
--- a/include/stereoItem.h
+++ b/include/stereoItem.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef STEREOITEM_H
 #define STEREOITEM_H
 
diff --git a/include/stereoWidget.h b/include/stereoWidget.h
index b16d7b656c245f8b14a7cc7626e8c4094c3688bf..cd173edcb647c2a1eb8a6af1c57d8930ef1cb4b2 100644
--- a/include/stereoWidget.h
+++ b/include/stereoWidget.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef STEREOWIDGET_H
 #define STEREOWIDGET_H
 
@@ -92,7 +112,7 @@ private slots:
         }
     }
     // funkioniert noch nicht richtig, da trotz des sprungs nach preprocess
-    // zuerst das ergebniss des zulöetzt berechneten frames mit edge angezeigt wird!!!!!!!!!
+    // zuerst das ergebniss des zuletzt berechneten frames mit edge angezeigt wird!!!!!!!!!
     void on_useEdge_stateChanged(int i)
     {
         if (mMainWindow->getStereoContext())
diff --git a/include/swapFilter.h b/include/swapFilter.h
index adcc5b2a4de60e6c11fd3be0e09cd46998598e1b..0b097f25c323d268c82a6d86734083e28eded103 100644
--- a/include/swapFilter.h
+++ b/include/swapFilter.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef SWAPFILTER_H
 #define SWAPFILTER_H
 
diff --git a/include/tracker.h b/include/tracker.h
index 53054f9322c444ebe4761164ca008afe77162e99..157b650d1a60a7843f9640b199e579c0ec37e40d 100644
--- a/include/tracker.h
+++ b/include/tracker.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef TRACKER_H
 #define TRACKER_H
 
diff --git a/include/trackerItem.h b/include/trackerItem.h
index c181ac2e162ecd76a401dc468740b33a967b48ad..009b1e57c60b3497116955aaac89001b1ad8aa25 100644
--- a/include/trackerItem.h
+++ b/include/trackerItem.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef TRACKERITEM_H
 #define TRACKERITEM_H
 
diff --git a/include/trackerReal.h b/include/trackerReal.h
index 80270387435a92038379dbe33202d69f46ed7141..0dde19968cf2c66bff9d977515d64b033f3dfe30 100644
--- a/include/trackerReal.h
+++ b/include/trackerReal.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef TRACKERREAL_H
 #define TRACKERREAL_H
 
diff --git a/include/trackingRoiItem.h b/include/trackingRoiItem.h
index 23f28f98746edda8f3b81bf39f12fd10b11b48c4..a3714e98b07d50c3153d737006e928fdaeffbd94 100644
--- a/include/trackingRoiItem.h
+++ b/include/trackingRoiItem.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef TRACKINGROIITEM_H
 #define TRACKINGROIITEM_H
 
diff --git a/include/vector.h b/include/vector.h
index 18f7f4618b16e1c4df0a27a7b6f4b94ec9f5cf82..41931c56a94aa8eb76b3be88cd3ae0bfec10a4c4 100644
--- a/include/vector.h
+++ b/include/vector.h
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef VECTOR_HH
 #define VECTOR_HH
 
diff --git a/include/view.h b/include/view.h
index 1d28bef0513812675a271ef632da9b289c7aa8f6..f3b690652f3f821ac27155b686a1f22bba158bde 100644
--- a/include/view.h
+++ b/include/view.h
@@ -1,4 +1,24 @@
-#ifndef VIEW_H
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef VIEW_H
 #define VIEW_H
 
 #include <QFrame>
diff --git a/src/analysePlot.cpp b/src/analysePlot.cpp
index 557d50e06f6171bec5b5888a502e9a241a700a2b..4bf5d295d9ad418286635dea570f8864f5c774ff 100644
--- a/src/analysePlot.cpp
+++ b/src/analysePlot.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QPainter>
 #include <QMouseEvent>
 
diff --git a/src/animation.cpp b/src/animation.cpp
index 166bc37230ae14a2e6f68ca301d04b34b400f772..38f9ca17edb14dea26babbb32708e9fa69f46fcb 100644
--- a/src/animation.cpp
+++ b/src/animation.cpp
@@ -1,4 +1,24 @@
-/*
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/*
 
 Class Animation
 Edited by: Ricardo Martin Brualla, 01.02.2007
diff --git a/src/autoCalib.cpp b/src/autoCalib.cpp
index a12dd2a55cae98b881c8cf77af13f8b66e876892..47e3037436007b6202281e51248c4d79537dd911 100644
--- a/src/autoCalib.cpp
+++ b/src/autoCalib.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QFileInfo>
 #include <QFileDialog>
 #include <QMessageBox>
diff --git a/src/aviFileWriter.cpp b/src/aviFileWriter.cpp
index f3ecc27e5c209b39cc1ac3e67e4280d508c14267..39f877b9f78d68d0734268a8da5a859727b296fd 100644
--- a/src/aviFileWriter.cpp
+++ b/src/aviFileWriter.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 
 
 //=============================================================================
diff --git a/src/backgroundFilter.cpp b/src/backgroundFilter.cpp
index dc0acc20b62ba6206e2f9cfced94e32efa8c797a..f67b0823894bd8c842d05585bf52bd15c9cd47cd 100644
--- a/src/backgroundFilter.cpp
+++ b/src/backgroundFilter.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "backgroundFilter.h"
 #include "stereoContext.h"
 
diff --git a/src/backgroundItem.cpp b/src/backgroundItem.cpp
index b4574eeae913737892af85f4aea21efe1343f09b..68a72da9e6eda6ed4c816ca4ff514070dc00fca6 100644
--- a/src/backgroundItem.cpp
+++ b/src/backgroundItem.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QtWidgets>
 
 #include "petrack.h"
diff --git a/src/blurFilter.cpp b/src/blurFilter.cpp
index 955b66ba49460ca2120fe496916a278c0dd78bc7..c9c40bb3a4d02f156fc7cb7e9989bc56ff8aa6c3 100644
--- a/src/blurFilter.cpp
+++ b/src/blurFilter.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "blurFilter.h"
 #include "opencv2/opencv.hpp"
 
diff --git a/src/borderFilter.cpp b/src/borderFilter.cpp
index 6ffa73b50d489b80eca35825f8b5adf9655e838b..36d27d3a1f0659cd361409e2185767437fd5dc2d 100644
--- a/src/borderFilter.cpp
+++ b/src/borderFilter.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "borderFilter.h"
 #include "helper.h"
 
diff --git a/src/brightContrastFilter.cpp b/src/brightContrastFilter.cpp
index 21ea61b5b5f20f27499566c308549eab5d60e58b..db725ecd4eddf5f642d49d1d506c49ff73c64a6e 100644
--- a/src/brightContrastFilter.cpp
+++ b/src/brightContrastFilter.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "brightContrastFilter.h"
 
 using namespace::cv;
diff --git a/src/brightFilter.cpp b/src/brightFilter.cpp
index 550b8352cad9814b4f659468e2bb606f97a9c572..10287a7133a9bc0806d5ef9deb0a8f7f2693c48b 100644
--- a/src/brightFilter.cpp
+++ b/src/brightFilter.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "brightFilter.h"
 
 BrightFilter::BrightFilter()
diff --git a/src/calibFilter.cpp b/src/calibFilter.cpp
index 58a62142fae6fefc51a410b9df5c043467aa9b42..89120cfbf20cc3079510d2590ad1adb22ef7c0c8 100644
--- a/src/calibFilter.cpp
+++ b/src/calibFilter.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "calibFilter.h"
 #include "helper.h"
 
diff --git a/src/calibStereoFilter.cpp b/src/calibStereoFilter.cpp
index 7fad562ff3cd637aa03f8555afbcc4bcf9f4e2ec..e449a16fbe820e61844c556edd8f4eab41f0f06b 100644
--- a/src/calibStereoFilter.cpp
+++ b/src/calibStereoFilter.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "calibStereoFilter.h"
 
 using namespace::cv;
diff --git a/src/codeMarkerItem.cpp b/src/codeMarkerItem.cpp
index ff35bcc46eb9802bf317f97293232710d392c4ce..6dc49b64e1a2582a174686ef413506ad5927c6df 100644
--- a/src/codeMarkerItem.cpp
+++ b/src/codeMarkerItem.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QtWidgets>
 
 #include "petrack.h"
diff --git a/src/codeMarkerWidget.cpp b/src/codeMarkerWidget.cpp
index cbd6944499573fa6f8b6a5bf58d9e0a1490b0e3a..602e5dc304f84fc00d0e669529c02e53f53c54b2 100644
--- a/src/codeMarkerWidget.cpp
+++ b/src/codeMarkerWidget.cpp
@@ -1,4 +1,24 @@
-#include "codeMarkerWidget.h"
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "codeMarkerWidget.h"
 
 CodeMarkerWidget::CodeMarkerWidget(QWidget *parent)
     : QWidget(parent)
diff --git a/src/colorMarkerItem.cpp b/src/colorMarkerItem.cpp
index 134a94c9a0b27438895f8b431f9b4a9b9575a57e..4b8f9add257ca4b642f66ecd874204afa903d24f 100644
--- a/src/colorMarkerItem.cpp
+++ b/src/colorMarkerItem.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QtWidgets>
 
 #include "petrack.h"
diff --git a/src/colorMarkerWidget.cpp b/src/colorMarkerWidget.cpp
index a6abd66b5439f3053968f7fa20dd9e3a4b21b35c..b24cf870d159669497ed0c7cf193f16ddbbd2419 100644
--- a/src/colorMarkerWidget.cpp
+++ b/src/colorMarkerWidget.cpp
@@ -1,4 +1,24 @@
-#include "colorMarkerWidget.h"
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "colorMarkerWidget.h"
 
 ColorMarkerWidget::ColorMarkerWidget(QWidget *parent)
     : QWidget(parent)
diff --git a/src/colorPlot.cpp b/src/colorPlot.cpp
index 8ae60155e796e545976aa968f6a08197b86e2573..d1dbd34049e3ff27ffc87b6eb7a0bc3c2a27cf61 100644
--- a/src/colorPlot.cpp
+++ b/src/colorPlot.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <iomanip>
 
 #include <QPainter>
diff --git a/src/colorRangeWidget.cpp b/src/colorRangeWidget.cpp
index 43a5ffc8a021517c03f08ae2b22e688cab84e524..a743a2aaf28e391b30a4e17a7050d9a3d7b226cf 100644
--- a/src/colorRangeWidget.cpp
+++ b/src/colorRangeWidget.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "colorRangeWidget.h"
 #include "control.h"
 
diff --git a/src/contrastFilter.cpp b/src/contrastFilter.cpp
index 689d11d809b1b08f2727ddf7e8792981ea014ea3..693684da17c26fed0ec3acf735afefa55e77fded 100644
--- a/src/contrastFilter.cpp
+++ b/src/contrastFilter.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "contrastFilter.h"
 
 ContrastFilter::ContrastFilter()
diff --git a/src/control.cpp b/src/control.cpp
index a945f39f550b4d05029d9cd8cb8df3bd3384bfc0..dda63c440d9d9b1cfbee64282b1595de645cbce3 100644
--- a/src/control.cpp
+++ b/src/control.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QDomElement>
 #include <iomanip>
 
diff --git a/src/coordItem.cpp b/src/coordItem.cpp
index 823741db43afc392de57b94c08d216cc5dbc383c..7f6a8341c062dfd4bc5470ded92de7b2c3968217 100644
--- a/src/coordItem.cpp
+++ b/src/coordItem.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <algorithm>
 #include <math.h>
 #include <QtWidgets>
diff --git a/src/ellipse.cpp b/src/ellipse.cpp
index 866b65e325751cc6c2c1d03a4888aa3ed11afc83..f3660ca66664dca403bb6bb1bb39b986ce698b88 100644
--- a/src/ellipse.cpp
+++ b/src/ellipse.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <cmath>
 
 #include <QPointF>
diff --git a/src/extrCalibration.cpp b/src/extrCalibration.cpp
index 03bf302e193e438a03136b7a13e7d9dbfaaffc63..239c1ce1f56d0a4f82b862f4cb699075a7c02150 100644
--- a/src/extrCalibration.cpp
+++ b/src/extrCalibration.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QtWidgets>
 #include <QFileDialog>
 #include <QMessageBox>
diff --git a/src/filter.cpp b/src/filter.cpp
index 9469a43333c7f1a0b0340aef42ff616bff58600d..c4811d0a4e0e96394df12c9763c6015a8ba85952 100644
--- a/src/filter.cpp
+++ b/src/filter.cpp
@@ -1,4 +1,24 @@
-#include "filter.h"
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "filter.h"
 #include "helper.h"
 
 using namespace::cv;
diff --git a/src/gridItem.cpp b/src/gridItem.cpp
index 7b135fbcb28778ff263b266888ea6e3dfec27381..a10406b6dc9ed73f1c794241eda8aadd1bd4f042 100644
--- a/src/gridItem.cpp
+++ b/src/gridItem.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QtWidgets>
 #include <math.h>
 #include <stdlib.h>
diff --git a/src/helper.cpp b/src/helper.cpp
index fc1470aa6c3f3f0758ab8ba20a1c3099e2c77fc0..e1ac4c3c17d41db1b96b815a04850a135e3e64ba 100644
--- a/src/helper.cpp
+++ b/src/helper.cpp
@@ -1,4 +1,24 @@
-#include "helper.h"
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "helper.h"
 
 //#include <opencv.hpp>
 #include "opencv2/opencv.hpp"
diff --git a/src/imageItem.cpp b/src/imageItem.cpp
index 496a6fc864709b6313536df8da92e1a11a4950fd..b7712d4856c8c7ea480bd94d324ba282205728a2 100644
--- a/src/imageItem.cpp
+++ b/src/imageItem.cpp
@@ -1,4 +1,24 @@
-#include <QGraphicsScene>
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <QGraphicsScene>
 #include <QPainter>
 #include <QGraphicsSceneHoverEvent>
 
diff --git a/src/logoItem.cpp b/src/logoItem.cpp
index d6162e029efb776ec5974fed664f3400643028e0..a351b6b12ef5eea25358bb185c2aa0a9c7b4e26a 100644
--- a/src/logoItem.cpp
+++ b/src/logoItem.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QGraphicsScene>
 #include <QPainter>
 #include <QApplication>
diff --git a/src/main.cpp b/src/main.cpp
index 716f07cea3cddbf9404326345a5453bb40353768..bcd2730dbc0fc5db7e1db6db7fae1d17bc85b1cf 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,4 +1,24 @@
-#include <QApplication>
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <QApplication>
 #include <QtWidgets>
 #include <QMessageBox>
 #include <QStyleFactory>
diff --git a/src/markerCasern.cpp b/src/markerCasern.cpp
index 9fd280ef37341081d5cf10325131804992f94b92..92adc6e35430a8b9789131f32a98b53b533e3df9 100644
--- a/src/markerCasern.cpp
+++ b/src/markerCasern.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 //folgende zeile spaeter raus
 #include "opencv2/highgui.hpp"
 
@@ -134,7 +154,7 @@ void MarkerCasern::modifyQuadrangle(const Vec2F v[4])
     if (mHasQuadrangle)
     {
         // seitenverhaeltnis 2:3 koennte auch bedacht werden
-        // angle on opposed edge is nearer to 90° 
+        // angle on opposed edge is nearer to 90� 
         if ((fabs((v[3]-v[2]).angleBetweenVec(v[0]-v[3])-PI/2.)+
              fabs((v[1]-v[0]).angleBetweenVec(v[2]-v[1])-PI/2.)) <
             (fabs((mQuadrangle[3]-mQuadrangle[2]).angleBetweenVec(mQuadrangle[0]-mQuadrangle[3])-PI/2.)+
diff --git a/src/markerColor.cpp b/src/markerColor.cpp
index c1f6634a115769a1a4eda0ee3bd755cc56d7c9a7..4b11cd1967a1a38afdd3aefa620f1f206e7f1461 100644
--- a/src/markerColor.cpp
+++ b/src/markerColor.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 //folgende zeile spaeter raus
 #include "opencv2/highgui.hpp"
 
@@ -134,7 +154,7 @@ void MarkerColor::modifyQuadrangle(const Vec2F v[4])
     if (mHasQuadrangle)
     {
         // seitenverhaeltnis 2:3 koennte auch bedacht werden
-        // angle on opposed edge is nearer to 90° 
+        // angle on opposed edge is nearer to 90� 
         if ((fabs((v[3]-v[2]).angleBetweenVec(v[0]-v[3])-PI/2.)+
              fabs((v[1]-v[0]).angleBetweenVec(v[2]-v[1])-PI/2.)) <
             (fabs((mQuadrangle[3]-mQuadrangle[2]).angleBetweenVec(mQuadrangle[0]-mQuadrangle[3])-PI/2.)+
diff --git a/src/markerHermes.cpp b/src/markerHermes.cpp
index be6650bd9a596eb45fb2c7e440d16f1f9f02731d..51d3696f5844ac9b24cfdf5e372c4769ebe8d154 100644
--- a/src/markerHermes.cpp
+++ b/src/markerHermes.cpp
@@ -1,4 +1,24 @@
-//folgende zeile spaeter raus
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+//folgende zeile spaeter raus
 #include "opencv2/highgui.hpp"
 
 // spaeter entfernen naechsten beiden zeilen
diff --git a/src/markerJapan.cpp b/src/markerJapan.cpp
index 0dbbedd170053c02e76e3a0526460316dd04c2fb..64c255728efb756b2c7de90c9567f7070aae27d9 100644
--- a/src/markerJapan.cpp
+++ b/src/markerJapan.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 //folgende zeile spaeter raus
 #include "opencv2/highgui.hpp"
 
@@ -138,7 +158,7 @@ void MarkerJapan::modifyQuadrangle(const Vec2F v[4])
     if (mHasQuadrangle)
     {
         // seitenverhaeltnis 2:3 koennte auch bedacht werden
-        // angle on opposed edge is nearer to 90°
+        // angle on opposed edge is nearer to 90
         if ((fabs((v[3]-v[2]).angleBetweenVec(v[0]-v[3])-PI/2.)+
              fabs((v[1]-v[0]).angleBetweenVec(v[2]-v[1])-PI/2.)) <
             (fabs((mQuadrangle[3]-mQuadrangle[2]).angleBetweenVec(mQuadrangle[0]-mQuadrangle[3])-PI/2.)+
diff --git a/src/multiColorMarkerItem.cpp b/src/multiColorMarkerItem.cpp
index af85d3fb35d767f8fb3fb8ec62ef279bed21c54c..807ae5d168d4aa4573c222c28f619fb9b4ef4ad1 100644
--- a/src/multiColorMarkerItem.cpp
+++ b/src/multiColorMarkerItem.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QtWidgets>
 
 #include "petrack.h"
diff --git a/src/multiColorMarkerWidget.cpp b/src/multiColorMarkerWidget.cpp
index 6917a7a46110a857de0d48c8b33ffffce7afcec3..44874e78e6941418c4f82f9a65f4a318ca11cb53 100644
--- a/src/multiColorMarkerWidget.cpp
+++ b/src/multiColorMarkerWidget.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "multiColorMarkerWidget.h"
 
 MultiColorMarkerWidget::MultiColorMarkerWidget(QWidget *parent)
diff --git a/src/person.cpp b/src/person.cpp
index bb233999ef4991e300b779ecd412062dd7061303..52e4d30185bef491447d0293a8ea0c5be9fcf1a8 100644
--- a/src/person.cpp
+++ b/src/person.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "person.h"
 #include "helper.h"
 //#include "highgui.h"
@@ -228,8 +248,8 @@ int frameNum = mSc->getAnimation()->getCurrentFrameNum();
                 //     entspricht:
                 // < 4.2cm x 4.2cm=18cm^2  = 50 Pixel in maximaler personengroesse
                 //in maximaler Entfernung zur Kamera
-                //(in ebenen Versuchen entspricht dies 40cm über Bodenhöhe)
-                //größer als 4500cm^2 = 8000 Pixel
+                //(in ebenen Versuchen entspricht dies 40cm über Bodenhöhe)
+                //größer als 4500cm^2 = 8000 Pixel
 
                 if (contourArea>l1*l1 && contourArea<l2*l2)
                 {
@@ -464,7 +484,7 @@ void PersonList::insertEllipses(const QList<MyEllipse> &el, float distFromCam) /
     Vec2F center;
 
     float r1Max = 60./mSc->getCmPerPixel(.01*distFromCam); // war 80 px am boden ist 60cm // radius der ellips mit maxmalem radius 80 pixel
-    float r1Min = 10./mSc->getCmPerPixel(.01*distFromCam); // war 15 px in Schulterhohe sei 10cm // laenge der grossen Hauptachse in mittlerer Kopfhöhe
+    float r1Min = 10./mSc->getCmPerPixel(.01*distFromCam); // war 15 px in Schulterhohe sei 10cm // laenge der grossen Hauptachse in mittlerer Kopfhöhe
 
     for (i = 0; i < el.size(); ++i) // ueber uebergebene liste von ellipsen
     {
@@ -617,14 +637,14 @@ void PersonList::optimize()
     for (int i = 0; i < size(); ++i) // ueber uebergebene liste von ellipsen stacks
     { // r1 ist immer die groessere ausdehnung
         //debout << at(i).at(0).center().x() << " " << at(i).at(0).center().y() << " " << at(i).last().area() << endl;
-        // at(i).getDistTopEllipse()+10) // in cm // 10 cm (eigentlich 10+step_size/2) unterhalb körpergröße
+        // at(i).getDistTopEllipse()+10) // in cm // 10 cm (eigentlich 10+step_size/2) unterhalb körpergröße
         float r1Max = 34./mSc->getCmPerPixel(.01*(at(i).getDistTopEllipse()+10)); // war 37.cm // war 60 px // 60px in kopfhoehe sind 37cm in kopfhoehe // radius der ellips mit maxmalem radius 80 pixel
 //        float r2Min = 12./mSc->getCmPerPixel(.01*(at(i).getDistTopEllipse()+20)); // war 60 px // 60px in kopfhoehe sind 37cm in kopfhoehe // radius der ellips mit maxmalem radius 80 pixel
         float areaMin = 22./mSc->getCmPerPixel(.01*(at(i).getDistTopEllipse()+100)); // 22. = 12.5*sqrt(Pi) wg area = r1*r2*Pi
         areaMin = areaMin*areaMin;
 //        float areaMin2 = 35.45/mSc->getCmPerPixel(.01*(at(i).getDistTopEllipse()+100)); // 22. = 20*sqrt(Pi) wg area = r1*r2*Pi
 //        areaMin2 = areaMin2*areaMin2;
-//        // 1000 px^2 entspricht r1=r2 = 18 px = 12,5cm radius in oberschenkelhöhe bzw 100cm unterhalb kopf
+//        // 1000 px^2 entspricht r1=r2 = 18 px = 12,5cm radius in oberschenkelhöhe bzw 100cm unterhalb kopf
 //        if (at(i).last().area() < areaMin2 && at(i).last().area() >= areaMin)
 //            debout << "1250 cm2 loescht bei " << at(i).at(0).center().x() << " " << at(i).at(0).center().y() << endl;
         if (at(i).last().area() < areaMin) // war 1000 px // at(i).last().r1() < 15 nicht zu gross waehlen um auch nur kopferkennung in dichten situationen zuzulassen // war: area() < 1000) || // groesste ellips in pyr muss mindestgroesse besitzen
diff --git a/src/petrack.cpp b/src/petrack.cpp
index abc011010f51f252875243058175f67880d40b26..f39a25e99373f1ed9a5b02ac103e7ed3cc2e8aae 100644
--- a/src/petrack.cpp
+++ b/src/petrack.cpp
@@ -1,4 +1,24 @@
-#include <QtWidgets>
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <QtWidgets>
 #include <QtOpenGL>
 #include <QSignalMapper>
 
diff --git a/src/player.cpp b/src/player.cpp
index dbf36f4bb5dbea7c5c2fc8a15bb749c5b929eafc..1c138997a3a5e6cdb52921b640f247f7fac57200 100644
--- a/src/player.cpp
+++ b/src/player.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QApplication>
 #include <QToolButton>
 #include <QVBoxLayout>
diff --git a/src/qtColorTriangle.cpp b/src/qtColorTriangle.cpp
index 6bf017dc73802efdacb7749f26116f9fd22b796c..7d6a71b315cfd9d709aa60de3e836da27c53e623 100644
--- a/src/qtColorTriangle.cpp
+++ b/src/qtColorTriangle.cpp
@@ -1,17 +1,17 @@
 /****************************************************************************
-** 
+**
 ** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
-** 
+**
 ** This file is part of a Qt Solutions component.
 **
-** Commercial Usage  
+** Commercial Usage
 ** Licensees holding valid Qt Commercial licenses may use this file in
 ** accordance with the Qt Solutions Commercial License Agreement provided
 ** with the Software or, alternatively, in accordance with the terms
 ** contained in a written agreement between you and Nokia.
-** 
+**
 ** GNU Lesser General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU Lesser
 ** General Public License version 2.1 as published by the Free Software
@@ -19,29 +19,29 @@
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU Lesser General Public License version 2.1 requirements
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-** 
+**
 ** In addition, as a special exception, Nokia gives you certain
 ** additional rights. These rights are described in the Nokia Qt LGPL
 ** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
 ** package.
-** 
-** GNU General Public License Usage 
+**
+** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3.0 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.  Please review the following information to
 ** ensure the GNU General Public License version 3.0 requirements will be
 ** met: http://www.gnu.org/copyleft/gpl.html.
-** 
+**
 ** Please note Third Party Software included with Qt Solutions may impose
 ** additional restrictions and it is the user's responsibility to ensure
 ** that they have met the licensing requirements of the GPL, LGPL, or Qt
 ** Solutions Commercial license and the relevant license of the Third
 ** Party Software they are using.
-** 
+**
 ** If you are unsure which license is appropriate for your use, please
 ** contact Nokia at qt-info@nokia.com.
-** 
+**
 ****************************************************************************/
 
 // siehe fuer Doku: http://docs.huihoo.com/qt/solutions/4/qtcolortriangle/qtcolortriangle.html
diff --git a/src/recognition.cpp b/src/recognition.cpp
index 34203a95ef353ab9ef2fdb6cb46ea172183b7283..0fbb7a84249a3e8d83a603074f04c68a853c641f 100644
--- a/src/recognition.cpp
+++ b/src/recognition.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QPointF>
 #include <QRect>
 #if not CV_MAJOR_VERION == 4
diff --git a/src/recognitionRoiItem.cpp b/src/recognitionRoiItem.cpp
index cb03450e31c2a1d0acbdfacd18744c1f5598821a..cf20b964f28bae992f05ed13fea15866cdfc6f3d 100644
--- a/src/recognitionRoiItem.cpp
+++ b/src/recognitionRoiItem.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QtWidgets>
 
 #include "petrack.h"
diff --git a/src/stereoAviFile.cpp b/src/stereoAviFile.cpp
index 5af0ac5a0fe51bc9a8978f0f88e8eb96673faf81..c6f7d79fde30c25bfc1faa0b4ae20d7028a01fb1 100644
--- a/src/stereoAviFile.cpp
+++ b/src/stereoAviFile.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #ifndef STEREO_DISABLED
 #include <stdio.h>
 
diff --git a/src/stereoContext.cpp b/src/stereoContext.cpp
index 11c4e2c8125148ad07ce025b432d5470f8f0c117..d76e642178dfcd1b5a72fd5a1ff41f7b95103f39 100644
--- a/src/stereoContext.cpp
+++ b/src/stereoContext.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QDir>
 
 #include "stereoContext.h"
diff --git a/src/stereoItem.cpp b/src/stereoItem.cpp
index c3c78febaf97a16f729dcc450a9bd3863c9b251a..c8d5f48d75c95e8d291ad109f02407318e33f641 100644
--- a/src/stereoItem.cpp
+++ b/src/stereoItem.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QtWidgets>
 
 #include "petrack.h"
diff --git a/src/stereoWidget.cpp b/src/stereoWidget.cpp
index a77b06e8de5772956187a54ccb5adf6044f1af09..bdeb019d95ed70644d5bb425523a1b0479f21fb2 100644
--- a/src/stereoWidget.cpp
+++ b/src/stereoWidget.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "stereoWidget.h"
 
 StereoWidget::StereoWidget(QWidget *parent)
diff --git a/src/swapFilter.cpp b/src/swapFilter.cpp
index f2bedbd5ce10d0ebe2c2d9498017dd9147cbc370..e3fefa966b12d5e6ff7c1f0f949c9abef2eb5c2d 100644
--- a/src/swapFilter.cpp
+++ b/src/swapFilter.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "swapFilter.h"
 #include "helper.h"
 
diff --git a/src/tracker.cpp b/src/tracker.cpp
index d3bff35219e71450af44184852a33f13c9bdb6be..e9b40ce893a36a1b3f3492ba7bb6c2d93f35dbf0 100644
--- a/src/tracker.cpp
+++ b/src/tracker.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "opencv2/opencv.hpp"
 
 #include <time.h>
diff --git a/src/trackerItem.cpp b/src/trackerItem.cpp
index 01520183fef485647c2217021ca32b6fad3c0b4f..4ad31fca12577ad18d0bfc388ed644a0bd86a087 100644
--- a/src/trackerItem.cpp
+++ b/src/trackerItem.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QtWidgets>
 #include <QInputDialog>
 
diff --git a/src/trackerReal.cpp b/src/trackerReal.cpp
index b94c46fc7a3d236d48a132a42dadc08a5eb5ff0b..892be0165675f136c69c789d30be76c3112a04dc 100644
--- a/src/trackerReal.cpp
+++ b/src/trackerReal.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "trackerReal.h"
 #include "helper.h"
 #include "recognition.h"
diff --git a/src/trackingRoiItem.cpp b/src/trackingRoiItem.cpp
index 6a0a8de7b24754919456f026777140b92a7246d4..d010e7d7824e949e7a3deeae92afbf84483ad3ca 100644
--- a/src/trackingRoiItem.cpp
+++ b/src/trackingRoiItem.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <QtWidgets>
 
 #include "petrack.h"
diff --git a/src/vector.cpp b/src/vector.cpp
index 7ad68e27e94f86295a87f82271da5b6015d1115c..1b9fc3ea47c51dbfd0fe0a4a7eba600a42ec7216 100644
--- a/src/vector.cpp
+++ b/src/vector.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "opencv2/opencv.hpp"
 
 #include <QPointF>
diff --git a/src/view.cpp b/src/view.cpp
index f865374ea2229a17db19f9884af88661c3f0834b..b721bd923be67ad9b6f1db377d124bc4abb65dc8 100644
--- a/src/view.cpp
+++ b/src/view.cpp
@@ -1,4 +1,24 @@
-#include <QtWidgets>
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <QtWidgets>
 
 #include <cmath>
 
diff --git a/tests/regression_test/tests/Person_txt.py b/tests/regression_test/tests/Person_txt.py
index 80b2dfca56573a1cac7501426108bba56dc1db7c..f25f74aaefda71051bb1348518f342be410ccc81 100644
--- a/tests/regression_test/tests/Person_txt.py
+++ b/tests/regression_test/tests/Person_txt.py
@@ -1,3 +1,22 @@
+#
+# PeTrack - Software for tracking pedestrians movement in videos
+# Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+# Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+# Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
 class Point:
 
     def __init__(self, frame, x, y, z):
diff --git a/tests/regression_test/tests/conftest.py b/tests/regression_test/tests/conftest.py
index 80e7866da1b9e8909bc73c47e4639629c56302bd..149c6142148230dd7082433f368b25f26d4a56b9 100644
--- a/tests/regression_test/tests/conftest.py
+++ b/tests/regression_test/tests/conftest.py
@@ -1,3 +1,22 @@
+#
+# PeTrack - Software for tracking pedestrians movement in videos
+# Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+# Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+# Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
 import pytest
 import subprocess
 
diff --git a/tests/regression_test/tests/test_tracker_txt.py b/tests/regression_test/tests/test_tracker_txt.py
index c045215124734211bf02a0be5122e57a4f1a1bc8..a7beabf747eda4309345f991a53e75a7ca92f60d 100644
--- a/tests/regression_test/tests/test_tracker_txt.py
+++ b/tests/regression_test/tests/test_tracker_txt.py
@@ -1,3 +1,22 @@
+#
+# PeTrack - Software for tracking pedestrians movement in videos
+# Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+# Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+# Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+#
 import copy
 
 from pytest import approx
diff --git a/tests/unit_test/main.cpp b/tests/unit_test/main.cpp
index 36766ceae0863befcb3ed9054e8cec3db4f3e1d3..db7f294c2596d9502b3314e006c6d7dfe6b3d795 100644
--- a/tests/unit_test/main.cpp
+++ b/tests/unit_test/main.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #define CATCH_CONFIG_RUNNER
 #include <catch2/catch.hpp>
 
diff --git a/tests/unit_test/tst_apptest.cpp b/tests/unit_test/tst_apptest.cpp
index 3454ca5f815341731990991df36a081a5320c8c3..0295d5dbb542c6c87c2874f84abd2505843eb507 100644
--- a/tests/unit_test/tst_apptest.cpp
+++ b/tests/unit_test/tst_apptest.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <catch2/catch.hpp>
 
 #include <iostream>
diff --git a/tests/unit_test/tst_control.cpp b/tests/unit_test/tst_control.cpp
index 70291d4d1b8b440f071a3d8e0d0dcd4dbacce0d2..c51e21ba73848b577817eac4b14d58508fdeeddd 100644
--- a/tests/unit_test/tst_control.cpp
+++ b/tests/unit_test/tst_control.cpp
@@ -1,3 +1,23 @@
+/*
+ * PeTrack - Software for tracking pedestrians movement in videos
+ * Copyright (C) 2010-2020 Forschungszentrum Jülich GmbH,
+ * Maik Boltes, Juliane Adrian, Ricardo Martin Brualla, Arne Graf, Paul Häger, Daniel Hillebrand,
+ * Deniz Kilic, Paul Lieberenz, Daniel Salden, Tobias Schrödter, Ann Katrin Seemann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include <catch2/catch.hpp>
 
 #include <iostream>