人脸肤色检测，在转换成Ycbcr格式后用相关系数进行肤色似然度计算，检测属于肤色的像素。-Skin color detection, the conversion into Ycbcr format color by correlation coefficients calculated likelihood, detection is skin color pixels.

Used for detecting skin in image.Uses YCbCr color space

Analysis Skin Color by PCA and Relations in YCbCr Color Space