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一种基于H.264的可变块快速运动估计算法

DOI: 10.11834/jig.20070216

Keywords: H.264,视频编码,运动估计

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Abstract:

H.264是最新的视频编码标准,它相对于以前的视频编码标准在编码效率上有了巨大的提高。高编码效率得益于采用了一系列新的编码技术,这也导致了较高的计算复杂度。H.264运用了可变块运动估计方法,这也是H.264编码过程中最耗时的模块。提出了一种基于H.264的可变块快速运动估计算法。该算法基于以下3种策略:静止块的预测、非静止块的预测搜索和合并过程中的自适应精细搜索。试验结果证明,该算法能够将计算复杂度降低到快速全搜索运动估计算法的3%,而PSNR和码率几乎与快速全搜索算法得到的结果相当。

References

[1]  ITU-T Rec.H.264/ISO/IEC 11496-10 Document JVT-G050 2003,Advanced Video Coding-Final Committee Draft[S].
[2]  Ostermann J,Bormans J,List P,et al.Video coding with H.264/AVC:tools,performance,and complexity[J].IEEE Circuits and System Magazine,2004,4 (1):7 ~ 28.
[3]  Zhu S,Ma K K.A new diamond search algorithm for fast blockmatching motion estimation[J].IEEE Transactions on Image Processing,2000,9 (2):287 ~ 290.
[4]  Zhu C,Lin X,Chau L P.Hexagon-based search pattern for fast block motion estimation[J].IEEE Transactions on Circuits and Systems for Video Technology,2002,12 (5):349 ~ 355.
[5]  Yoon H S,Lee G S.Motion estimation based on spatio-temporal correlations[A].In:Proceedings of the International Conference on Image Processing[C],Barcelona,Spain,2003,2:359 ~ 362.
[6]  Yang J F,Chang S C,Chen C Y.Computation reduction for motion search in low rate video coders[J].IEEE Transactions on Circuits and Systems for Video Technology,2002,12 (10):948 ~ 951.
[7]  Tu Y K,Yang J F,Shen Y N,et al.Fast variable-size block motion estimation using merging procedure with an adaptive threshold[A].In:Proceedings of International Conference on Multimedia and Expo[C],Baltimore,MD,USA,2003,2:789 ~792.
[8]  Lengwehasarit K,Ortega A.Probabilistic partial-distance fast matching algorithms for motion estimation[J].IEEE Transactions on Circuits and Systems for Video Technology,2001,11 (2):139 ~ 152.
[9]  Joint Video Team(JVT) Reference Software Version JM8.5[CP/OL]http://iphome.hhi.de/ suehring/tml/download/,2005-12-08.

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