肤色 头发

http://stackoverflow.com/questions/4822999/detecting-hair-in-a-portrait-image

http://www.ee.cuhk.edu.hk/~knngan/TCSVT_v9_n4_p551-564.pdf

http://www.umiacs.umd.edu/~yaser/pamis.pdf

http://codecapsule.com/2011/12/26/hair-analysis-and-detection-in-facial-picture/

http://www.computer-vision-software.com/blog/2009/06/fastfurious-face-detection-with-opencv/

http://stackoverflow.com/questions/12968576/opencv-skin-detection

http://www.morethantechnical.com/2013/03/05/skin-detection-with-probability-maps-and-elliptical-boundaries-opencv-wcode/

http://blog.youkuaiyun.com/yangtrees/article/details/7439625