通过高斯肤色模型的建立，分割出人脸区域，接着，结合人脸几何特性筛选出人脸区域，依据嘴巴的颜色同人肤色的其它部位相比较，有着明显的不同，从而建立嘴巴模型，找出了嘴巴的特征部位。(Based on the Gauss model of skin color segmentation, face region, and then combined with face geometric characteristics of selected face region, on the basis of other parts of the mouth of the human skin color comparison is significantly different, so as to establish the mouth model, find out the characteristics of the mouth.)