结合Opencv工具，在Visual C++上，利用背景差算法实现运动动目标检测，并结合三帧差分算法对检测结果进行判断和报警。已通过编译和运行。

-Combination of the the Opencv tools in Visual C++ background subtraction algorithm to achieve the movement moving target detection, combined with three differential algorithm to judge the test results and alarm. Has passed compile and run.