基于分层的自适应运动估计算法  

Adaptive Motion Estimation Algorithm Based on Hierarchy

作　　者：俞柏锋[1] 赵飞[1] 张博[1] 葛宝忠[1] 

机构地区：[1]国家数字交换系统工程技术研究中心,河南郑州450002

出　　处：《电视技术》2008年第3期13-15,共3页Video Engineering

基　　金：国家"863"高技术研究发展计划项目(2007AA01Z434)

摘　　要：提出了一种基于分层的自适应运动估计算法,选取菱形作为搜索模型,提取相邻宏块间的运动矢量关系检验运动状况,对大运动块采用分层结构搜索,其他运动使用小菱形搜索,结合多种提前截止准则,在保证匹配精度的前提下提高了搜索速度。An adaptive motion estimation algorithm based on hierarchy is proposed. The diamond is selected as searching model, and the motion vector relation between adjacent macro-blocks is utilized to check the motion status. And then, the hierarchic searching is adopted for big moving blocks, and the small diamond searching is used for other motions. Combined with several pre-stop principles, the algorithm can improve the searching speed on the promise of enough matching precision.

关 键 词：分层 自适应 视频压缩 菱形搜索 截止准则 

分 类 号：TN919.81[电子电信—通信与信息系统]