做动态图像的处理时，即做视频处理时，动态特征是不可或缺的，尤其是动态的期望和方差是我们必须使用的两个量，本程序提供了提取的算法-Do dynamic image processing, video processing is done, the dynamic characteristic is indispensable, especially in the dynamic expectation and variance is that we must use two quantities,