说明：  基于背景建模的动态场景目标检测,介绍了背景建模的步骤和重要的方法，然后介绍了根据背景差分法，来提取运动目标，从而进行跟踪
(Background modeling of dynamic scenes based on target detection, background modeling described the steps and important way, then introduced under the background difference method to extract moving objects, which track)