是一种基于像素的运动检测方法，它过对视频图像序列中相邻的两个或三个图像进行差分运算来获得运动物体轮廓-Is a pixel-based motion detection method, which over the video image sequence of two or three adjacent image difference operation to get the outline of moving objects

帧差法识别运动并描述运动物体轮廓。物体可从摄像头或视频文件中读取。-Frame difference method identify and describe the moving object contour movement. Objects from the camera or video file to read.

对任何运功的物体进行实时的检测和跟踪，并能标记运动目标的轮廓。-Exercise our powers to object to any real-time detection and tracking, and to mark the outline of moving objects.