计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (1): 86-86.

• 学术探讨 • 上一篇    下一篇

快速运动估计的赢墩领出策略及在H.264中的应用

李军,李艳辉   

  1. 暨南大学珠海学院
  • 收稿日期:2006-04-26 修回日期:1900-01-01 出版日期:2007-01-01 发布日期:2007-01-01
  • 通讯作者: 李艳辉 tlljyh

A Fast Algorithm for Motion Estimation Using Winner-update Search strategy

Jun Li,YanHui Li   

  1. 暨南大学珠海学院
  • Received:2006-04-26 Revised:1900-01-01 Online:2007-01-01 Published:2007-01-01
  • Contact: YanHui Li

摘要: 运动估计是视频压缩算法的重要组成部分,块匹配算法是运动估计的主要方法,但算法复杂度高。本文提出了一种新的Winner-update搜索策略,总结了衡量图像复杂度的简便方法,构造合理的匹配误差序列,以重排匹配搜索的顺序,进一步降低了块匹配算法的计算复杂度。文中设计了与算法相适应的数据结构,对比实验表明了新算法的有效性,可节省90~98%的计算量。

关键词: 运动估计, 快速算法, 块匹配

Abstract: The block matching algorithm, as a important part of video compression, is the most popular for motion estimation, but its computational complexity is high. A fast algorithm for motion estimation using winner-update search strategy is presented in the paper. A simple method is presented to measure the complexity of the image, and the proper matching distortion set is constructed. The new algorithm reduces further the computational complexity of block matching by rearranging the searching order according to the image complexity. A corresponding data construction is designed for the new algorithm, and experimental results verified the effect of the new algorithm, it saves computations about 90~98%.

Key words: motion estimation, fast algorithm, block matching