计算机工程 ›› 2011, Vol. 37 ›› Issue (9): 260-262.doi: 10.3969/j.issn.1000-3428.2011.09.091

• 开发研究与设计技术 • 上一篇    下一篇

一种AVS-M运动搜索快速算法

张新安,宫彦军,陈爱武,李小武   

  1. (湖南科技学院电子工程系,湖南 永州 425100)
  • 出版日期:2011-05-05 发布日期:2011-05-12
  • 作者简介:张新安(1957-),男,副教授,主研方向:数字信号处理;宫彦军,副教授、博士;陈爱武、李小武,讲师、硕士
  • 基金项目:
    湖南省科技厅科技发展计划基金资助项目(2009FJ4062);湖南省教育厅高等学校科学研究基金资助项目(08C364)

Fast Algorithm for AVS-M Motion Search

ZHANG Xin-an, GONG Yan-jun, CHEN Ai-wu, LI Xiao-wu   

  1. (Department of Electronic Engineering, Hunan University of Science and Engineering, Yongzhou 425100, China)
  • Online:2011-05-05 Published:2011-05-12

摘要: 针对AVS-M运动搜索算法的复杂性,根据其变换量化的特点,推导全零块判决准则,提出一种基于全零块检测的AVS-M运动搜索快速算法,在运动搜索的同时判决出全零块,从而节省运动搜索和变换量化的时间。实验数据显示,该算法节省的计算量最多可达77.4%,且比特率下降程度大于峰值信噪比下降程度。结果表明,在不降低编码性能的情况下,该算法能有效提高运动估计的编码速度。

关键词: 整数变换, 全零块检测, 帧间预测, 运动搜索

Abstract: In accordance with the complexity of AVS-M motion search algorithm, according to the characteristics of its converting quantification, all-zero block judgment criterion is deduced and an AVS-M fast motion search algorithm based on all-zero block detection is proposed. The algorithm judges all-zero block when moving and searching, which saves a lot of time on moving search and converting quantification. Experimental results show that the computational capacity saved by the algorithm can amount to 77.4% at most, and the dropped level of Bits is larger than PSNR. The encoding speed of motion estimation can be effectively increased without the lower encoding performance.

Key words: integer converting, all-zero block detectionZ, inter prediction, moving search

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