一个基于知识的人脸检测系统，首先是提取肤色，然后在检测眼睛，嘴这些特征，进行验证是否是人脸，并标记位置-a knowledge-based Face Detection System, the first extraction of color, and then testing the eyes, mouth of these characteristics, verify whether he is a human face, and mark position

人脸区域检测，对图像中的人脸区域进行检测并用矩形框标记。-Face region detection, face image in the region to detect and mark with a rectangular box.