Viola-Jones implementation in C
First release at 6 Dec 2011, https://www.linux.org.ru/news/opensource/7098102
Project homepage (in Russian): http://lubyagin.ru/sqface/
Licensed under the GNU Affero General Public License version 3 (AGPLv3), or at your option, any later version.
Third-party files (rapidxml.hpp) licensed under: http://rapidxml.sourceforge.net/license.txt (Boost Software License or The MIT License, to be chosen freely by the user)