References
The following is a list of recommended books where you can learn more about the topics in this chapter.
Richard Szeliski. Computer Vision: Algorithms and Applications, Springer. 2011.
P. Viola and M. Jones, Rapid object detection using a boosted cascade of simple features, Computer Vision and Pattern Recognition, 2001. CVPR 2001. Proceedings of the 2001 IEEE Computer Society Conference on, 2001, pp. I-511-I-518 vol. 1.
OpenCV library, http://opencv.org.