mean shift跟踪，椭圆大小及方向随物体运动而变化，始终能框住物体，论文和代码均在压缩包里面，亲测没有问题。-mean shift tracking, oval object the size and direction of the movement with the change, will always be able to frame objects, and code papers were compressed inside, pro-test is no problem.

此代码用于设计摄像机动态视觉追踪，用户可以圈出目标物体，目标物体移动过程中会一直被跟踪(This code is used to design camera dynamic visual tracking, the user can circle the target object, the target object will be tracked in the process of moving.)

In this paper, we present a simple yet fast and robust algorithm which exploits the spatio-temporal context for visual tracking. Our approach formulates the spatio-temporal relationships between the object of interest and its local context based on a