中文说明：近期学校要做课程项目，要求检测出视频中的运动目标，并实现跟踪。这是MATLAB论坛转载来的，没试成功，主要是AVi文件打不开，我又找不到原因。
English Description：
In the near future, the school needs to do the course project, which requires the detection of moving objects in the video and the realization of tracking. This is the MATLAB forum reprinted, did not try to succeed, mainly AVI file open, I can not find the reason.