The opentrack project is a fork of "FaceTrackNoIR" software.

Original project's site located at <http://facetracknoir.sourceforge.net/home/default.htm>

Copyright (c) 2015, Wim Vriend

Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.