运动估计块匹配两级搜索算法

根据视频图像相邻块在空间上具有很大的相关性,吸收了矢量预测块匹配的核心思想,提出一种两级块匹配运动估计算法,在第一级中,首先根据矢量预测确定一个小区域,然后在此区域内进行快速搜索,如果在第一级中没有搜索到匹配块则进行第二级搜索,该算法可大大提高搜索速度.

A Two-Step Search Algorithm of the Block Matching Motion Estimation

According to the spacial correlation between the near blocks of the motion object, we absorb the core thinking of the vector prediction block matching algorithm, then present a two step search algorithm of the block matching motion estimation. In the first step of the algorithm, a small area is determined by the vector prediction, then the fast research is performed in the area; if the match block is not found in the first step, the second step of the algorithm is performed. The algorithm will speed the search very much.