一种基于轮廓自扩展的GVF算法

针对Snake算法及GVF算法对初始轮廓覆盖区域敏感性的缺陷,提出一种轮廓自扩展方法,从而使初始轮廓能够有效地覆盖目标所在区域,达到对目标的完整搜索;将其应用到目标跟踪中,根据下一帧中目标与当前帧设置的轮廓的交叉,通过自扩展初始轮廓可以很快将目标划为搜索区域之内.实验表明,基于轮廓自扩展方法的GVF方法可以实现对目标轮廓的完整提取;在目标跟踪中可以自动、有效地跟踪目标.

An Improved GVF Algorithm based on Self-Expanding Contour

A method for self-expanding contour setting is proposed,which control the area of covering the object.Using this method,the initial contour can cover the whole object,so the entire edge contour is accessibility.And with the application on object tracking,the contour of self-expanding can cover the object perfectly according to the information of the crossing of the initial contour in the current frame and the object contour in the next frame.Experiment shows that the method can extracts the entire contour o...