中文说明：在YCbCr色彩空间中建立肤色分布的高斯模型，得到肤色概率似然图像，在最佳动态阈值选取算法下完成肤色区域的分割。
English Description：
The Gaussian model of skin color distribution is established in YCbCr color space, and the skin color probability likelihood image is obtained. The skin color region is segmented under the optimal dynamic threshold selection algorithm.