一种基于H.264/AVC的高性能快速运动估计算法

摘要

为了降低运动估计的计算量,提出一种基于H.264/AVC的快速运动估计算法.该算法使用了提前终止策略和自适应的搜索范围,结合运动矢量预测以及多模板搜索.实验结果表明,在编码性能接近全搜索( full search,FS)算法的同时,本算法比FS和UMHexagonS算法平均节省了65.42％和32.76％的运动估计时间,大幅度提高了编码速度.%In order to reduce the computation of motion estimationl(ME) module,this paper presented a novel fast ME algorithm for H. 264/AVC with an early termination strategy and an adaptive search range method. The proposed algorithm adopted generalized motion vector predictors and multiple search patterns to ensure good quality. Experimental results show that the proposed algorithm can highly speed up video coding. It have saved 65. 42% and 32. 76% on average of motion estimation time compared to FS and UMHexagonS respectively, and have been negligible objective quality degradation compared to FS.