说明：  经实验发现，用背景减除方法也可以针对某些摄像机运动的情况，而非像大部分文章中所提到的该方法仅仅适合于摄像机静止的情况，而且效果还要较好！实验视频可以是一段足球视频！
(experiment found that the use of background subtraction method can also be targeted at certain camera movements, Most of the essays rather than as has been described by the only method suitable for the camera static situation, but also better results! Experimental Video can be a football video!)