H.264中基于多分辨率高效帧间预测算法  

Efficient motion estimation algorithm based on multi-resolution for H.264

作　　者：陈春雁[1] 王继成[1] 

机构地区：[1]同济大学计算机系,上海200092

出　　处：《计算机工程与应用》2007年第1期83-85,89,共4页Computer Engineering and Applications

摘　　要：针对H.264视频编码标准,提出一种帧间编码的快速模式选择和运动搜索算法。此算法基于多分辨率运动估计方案和新率失真模型进行预测模式快速选择,并结合带提前退出准则的快速搜索算法来加速搜索过程。新算法能使运动估计的计算复杂度大幅降低。实验结果表明,同全搜索算法相比,在编码效率略微下降条件下,编码速度提高60到120倍。An efficient mode decision and motion search algorithm for H.264 inter-coding is proposed in this paper.The multiresolution motion estimation scheme and an efficient rate-distortion model are adopted with early termination rules to accelerate the search process.Using the new method,the complexity of computation involved in motion estimation can be reduced sharply. Experiment results show that the proposed algorithm can make the video coding process speed up by ranging from 60 to 120 times compared to full＇search algorithm while the quality of video image degrade little.

关 键 词：H.264帧间编码 快速模式选择 多分辨率 率失真模型 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]