用于识别一张图片里有几个人。要求摄像头是从上向下拍照。-used to identify a picture there are few people. Asked camera downward from the camera.

图像相似度检测，下面是直方图相交的代码，同种图片的识别率达90％以上，性能非常稳定。 程序的例子是8位（256色）位图，其他位图类似。 -Image similarity detection, the following is the histogram intersection of the code, the same kinds of picture identification rate of 90, performance is very stable. Procedure