说明：  通过五帧差分算法实现对运动目标的检测，通过使用matlab实现，能够很好的检测出视频中运动的目标，通过读改代码，可以很好的帮助对五帧差分算法的了解
(Through the five frame difference algorithm to achieve the detection of moving objects, through the use of MATLAB, it can be very good to detect the moving object in the video, by reading and changing the code, it can help to understand the five frame difference algorithm)