摘要： 为在不影响视频质量的前提下，提高运动估计的搜索速度并节省编码时间，提出一种基于预测方向的多模板切换运动估计算法，利用最优点方向和运动方向的矢量和方向预测下次运动方向，并实时切换模板。在实现过程中采用查表方法实现模板切换和阈值的提前退出，以减少搜索时间。测试结果证明了该算法的有效性。

关键词: 多模板切换, 运动估计, 预测方向

Abstract: In this paper, a new motion estimation algorithm based on multi-template switching according to prediction direction is presented. It uses vectors’ sum of optimal point direction and movement direction to forecast the next movement direction and switches templates real-timely. During the realization process, in order to reduce search time, looking-up table method is used to achieve template switching and the threshold is set to exit. Text results indicate that this algorithm is effective.

Key words: multi-template switch motion estimation, prediction direction

中图分类号: 

• TP37