一种AVS-M运动搜索快速算法  

Fast Algorithm for AVS-M Motion Search

作　　者：张新安[1] 宫彦军[1] 陈爱武[1] 李小武[1] 

机构地区：[1]湖南科技学院电子工程系,湖南永州425100

出　　处：《计算机工程》2011年第9期260-262,共3页Computer Engineering

基　　金：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)

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。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.

关 键 词：整数变换 全零块检测 帧间预测 运动搜索 

分 类 号：TN919.81[电子电信—通信与信息系统]