蒙面人检测源代码，首先识别出正面人体，然后定位出人的头部。在此基础上做人脸检测，如果未检测到合格的人脸，则认为当前人物为蒙面。常用于安防中。-The masked men Detection source code, first identified positive body, then positioning the head of the person. On this basis, human face detection, if not detected the qualified h