1. Gonzalez RS, Wintz P Digital image processing
2. Gu G, Perdisci R, Zhang J, Lee W (2008) BotMiner: clustering analysis of network traffic for protocol-and structure-independent Botnet detection. In: USENIX security symposium 2008 Jul 28, vol 5, no 2, pp 139–154
3. Sung KK, Poggio T (1998) Example-based learning for view-based human face detection. IEEE Trans Pattern Anal Mach Intell 20(1):39–51
4. © Copyright 2013, Alexander Mordvintsev & Abid K. Revision 43532856.
http://opencv-python-tutroals.readthedocs.io/en/latest/py_tutorials/py_objdetect/py_face_detection/py_face_detection.html
5. Viola P, Jones MJ (2004) Robust real-time face detection. Int J Comput Vis 57(2):137–154