系统有以下部分组成：电脑自带摄像头拍照、人脸检测、将人脸照片录入数据库、输入照片进行人脸识别。本程序是基于肤色识别的方法对人脸进行检测，人脸肤色范围是100≤B≤120，140≤R≤160，所以将此范围内的像素点置白，剩余部分置黑。利用imerode函数对图片进行球状腐蚀，然后再对图片进行中值滤波，达到平滑效果。最后，对于这张已经缩放而且二值化和各种处理之后的照片来说，如果白化区域的像素点少于1000，就舍弃。将图片进行分割，这里我们引进了欧拉数。

这样就可以把一些类似颜色人脸的背景排除。最后对于每块白化区域，确定其边界然后画出，便可以完成多人脸检测。

-System has the following components: The computer comes with the camera, camera, face detection, face recognition face photo entry database, enter the photo. This procedure is a method based on color recognition, face detection, face color range 100 ≤ B ≤ 120,140 ≤ R ≤ 160, so set white pixels within this range, the remaining part of the set black. Globular corrosion imerode function of the picture, then picture the median filtering to achieve a smoothing effect. Finally, for this has been scaled but binarization and various processing after pictures, if the pixel point of the whitened area is less than 1000, it is discarded. Image segmentation, we introduce the Euler number. This can exclude the background of similar color face. Finally, for each block of albino region and then draw its boundary, we can complete multiple face detection.