多视点视频编码的TZSearch算法优化  

TZSearch algorithm optimization of multiview video coding

作　　者：李跃[1] 邓联文[1,2] 习业勋 黄生祥[1,2] 胡照文[1] 周克省[1] 

机构地区：[1]中南大学物理与电子学院,湖南长沙410083 [2]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2014年第10期3450-3455,共6页Journal of Central South University:Science and Technology

基　　金：湖南省自然科学基金资助项目(10JJ5049);湖南省科技计划项目(2012SK3232;2011SK3258);中南大学研究生创新基金资助项目(2013)~~

摘　　要：为了减少多视点视频编码(MVC)中TZSearch算法的计算复杂度,通过分析相邻宏块运动矢量之间的相关性以及当前编码宏块与相邻宏块的最优率失真(RD)之间的关系,提出一种提前终止策略;并对TZSearch算法中光栅搜索范围和循环钻石搜索的最大步长进行优化。研究结果表明:在编码性能基本不变的前提下,与TZSearch算法相比,本文算法平均节约运动估计时间89.67%。In order to reduce the computational complexity of the TZSeach algorithm in multiview video coding（MVC）,the relationship of the motion vectors in the adjacent macroblocks as well as the sum of absolute distortion in the adjacent and the current encoding macroblock was analyzed. The search range of the raster search algorithm and the maximum step of the loop diamond search were optimized. The results show that compared with the TZSearch algorithm, the proposed algorithm saves the motion estimation time by 89.67% on the average without significant influence on the encoding performance.

关 键 词：多视点视频编码 运动估计 TZSearch算法 

分 类 号：TP371[自动化与计算机技术—计算机系统结构]