可以检测多人脸图像，背景相对简单。 保留了图像的边缘信息，以区分相连的不同人脸肤色区域.运行时请放一张人脸图片到代码目录下,并改代码中的文件名.-Can detect more than face image, the background was relatively simple. Retained the image edge information in order to distinguish between connected color regions face differe