结合Opencv工具，在VC++上，利用背景差算法实现运动目标检测，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。-Opencv combination of tools, in VC++, using the background of poor moving target detection algorithm, combined with three differential algorithm to judge the test results and alarm. Had passed through the compiler and run.