级联分类器检测人脸，并定位脸部、眼睛和嘴巴，用到OPENCV分类器-Cascade classifier detects the face, and the positioning of the face, eyes and mouth, used OPENCV classification

可以检测定位人脸和人的眼睛位置，适用于美颜相机中聚焦脸部和定位脸部器官(It can detect and locate the position of face and human eyes. It is suitable for focusing face and locating facial organs in beauty cameras.)