中文说明：matlab肤色检测程序。rgb2tsl.m用作颜色模式转换，将RGB模式转换为TSL模式。skin.m实现肤色检测，肤色区域为白色，非肤色区域为黑色。
English Description：
Matlab skin color detection program. Rgb2tsl. M is used to convert RGB mode to TSL mode. Skin. M is used to detect skin color. The skin area is white and the non skin area is black.