有效的肤色分割程序，将RGB颜色空间转化到YCbCr空间，有效处理了光照 通过形态学处理完善了图片肤色分割的圆滑程度-Skin color segmentation and effective procedure to RGB color space conversion to the YCbCr space to deal effectively with the light through the morphological processing and improved color image segmentation smooth level