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 o