摘要
针对在H.264的多宏块运动估计中,计算繁琐,无法达到实时要求的缺陷,提出一种自适应的运动搜索算法.利用相邻宏块间的相关性和中值预测来更加精确地预测搜索初始点和确定搜索区域.实验表明,在编码性能基本不损失的情况下,该算法减少了搜索的运算量.
In the estimation of the multi-macro module in H. 264, it＇s computational burden is unaccepectable and can not meet the demand in realtime application, so an adaptive search algorithm of motion estimation is proposed. More accurate motion estimation point and more appropriate searching fields can be predicted by using the correlations between one block and others and median prediction. An experi- mental result verified that, the proposed method can reduce the complexity for motion estimation greatly and the capability of encoding has no loss basically.
出处
《西安工程大学学报》
CAS
2008年第6期772-774,789,共4页
Journal of Xi’an Polytechnic University
关键词
自适应搜索
中值预测
搜索区域
adaptive search
median prediction
search field
