基于EPZS的运动估计研究

EPZS Based Motion Estimation Research

H.264/AVC是近年来视频编码领域的研究热点,标准引用了多种新的技术提高编码效率,运动估计就是其中的关键技术之一,复杂的计算相应地带来了大量的计算复杂度.为了适应实时性的需求,许多研究人员致力于快速运动估计算法的研究,EPZS是被官方模型JM采纳的性能优良的算法.文章通过深入研究EPZS算法,研究了矢量的时空相关性,提出了一种自适应运动估计算法.实验结果表明,改进后的算法与EPZS算法相比,在编码质量相当的情况下,运动估计计算复杂度有了一定的减少.

H.264/AVC is a research focus in video coding filed in recent years,some new technologies has been used in improving coding efficiency,motion estimation is one of the key technologies,complicated calculation has brought large of computational complexity.In order to adapt the demand of real-time,many researchers devote to study the fast motion estimation algorithm,the algorithm of EPZS with excellent performance is adopt in official model of JM.The algorithm of EPZS and space-time correlation of vector is deeply researched in this paper,a adaptive algorithm of motion estimation is put forward.Experimental results show that,compared to EPZS algorithm,motion estimation reduced computational complexity in the encoding quality.