实现运动估计算法的优化技术  

Optimization Technique of Realizing Motion Estimation Algorithm

作　　者：常淑娟[1] 和煦[1] 杨晓珍[2] 

机构地区：[1]西安邮电学院,陕西西安710061 [2]TCL集团工业研究院,广东深圳518067

出　　处：《现代电子技术》2011年第12期114-116,共3页Modern Electronics Technique

基　　金：国家"863"计划资助项目(2005AA133070)

摘　　要：针对H.263编码器,通过研究软件实现提高运动估计算法效率的优化技术,提出一种基于位标识的重复搜索点的识别方法,其思想是根据运动矢量各向非均匀分布特性设置模板内各搜索点顺序,并通过实验验证了该优化方案的有效性。其恢复图像的整像素和半像素搜索点数均有较大的减少,平均每帧的压缩时间大大缩短,而且平均每帧的编码码长也有不同程度的缩短。Aiming at H.263 coder,studying some optimization techniques for improving the efficiency of motion estimation algorithm in software implementation,a succinct and efficient method based on bit sign is proposed to avoid repetition of search point.Setting the search order of points in one template based on motion vector＇s unequal distribution in each direction,and comparing the performance of H.263 coder before and after above-mentioned optimization.The whole pixel and half pixel search points of reconstructed image are reduced,the compressed time of the average per frame is shortened greatly,and the code length of the average per frame is shortened.

关 键 词：运动估计算法 优化技术 搜索点 位标志 

分 类 号：TN919.81[电子电信—通信与信息系统]