计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (22): 141-144.

• 图形、图像、模式识别 • 上一篇    下一篇

基于多向小十字块模板的块匹配运动估计算法

朱晓红,刘东海   

  1. 重庆大学 计算机学院,重庆 400044
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-08-01 发布日期:2011-08-01

Motion estimation algorithm based on multi-path small diamond search pattern

ZHU Xiaohong,LIU Donghai   

  1. College of Computer Science and Engineering,Chongqing University,Chongqing 400044,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-08-01 Published:2011-08-01

摘要: 在研究和分析图像压缩中块匹配运动估计算法的基础上,提出了一种采用多向小十字模板进行快速块匹配运动估计算法MP-SDSP,算法根据序列图像中运动矢量场中心偏置分布特性,利用一条以上的路径寻找最优运动矢量,避免了在快速搜索中陷入错误路径。试验结果证明,在搜索精度基本相同的情况下,MP-SDSP算法能有效减少搜索点数,提高搜索速度,并适应小运动块和大运动块的搜索。

关键词: 图像压缩, 块匹配算法, 运动估计, 多向搜索

Abstract: This paper presents a block motion estimation algorithm named Multi-Path Search(MPS) using small diamond search pattern.According to the characteristic of the center-based motion vector distribution for the real-world video sequence,MP-SDSP utilizes more than one path to find the absolute minima.Wrong search paths are avoided early resulting in faster search.Experimental results indicate that MP-SDSP algorithm can reduce the number of search points to improve the search speed with the similar search precision,and it does well in stationary and large motion search.

Key words: image compression, block-matching algorithm, motion estimation, multi-path search