基于频域特征的H.264/AVC帧内编码模式快速预测

王正宁; 彭强; 诸昌钤

基于频域特征的H.264/AVC帧内编码模式快速预测

基金项目:

国家自然科学基金资助项目(60672099)

详细信息

作者简介:
王正宁(1979- ),男,博士研究生,研究方向为视频压缩与传输,E-mail:znwang@home.swjtu.edu.cn

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- 文章访问数: 1269
- HTML全文浏览量: 55
- PDF下载量: 272
- 被引次数: 0
出版历程
- 收稿日期: 2006-11-18
- 刊出日期: 2007-06-25

Fast H.264/AVC Intra-Prediction Using Frequency Domain Features

摘要

摘要: 为降低H.264/AVC帧内预测计算复杂度,提出了基于频域特征的快速帧内编码模式预测算法.首先,对要编码的4×4块进行DCT变换,得到少数的几个DCT系数.然后,通过这几个系数计算块的特征方向和方差.最后,根据特征方向和方差计算最可能的几种预测模式.实验验证了该算法在不牺牲图像质量和压缩效率的基础上将帧内预测的计算复杂度平均降低了67.5%.
- 视频编码 /
- H.264/AVC /
- 帧内预测 /
- 频域 /
- 特征
Abstract: To reduce the intra-prediction complexity in H.264/AVC,a fast intra-prediction mode selection algorithm was proposed.It calculates the DCT(discrete cosine transform) coefficients for each block,and uses frequency domain features of the target block to eliminate the majority of candidate modes.Simulations verify that the proposed method speeds up the intra-prediction process by 67.5% on average without sacrificing the picture quality and compression ratio.
- video coding /
- H.264/AVC /
- intra-prediction /
- frequency domain /
- characteristic

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参考文献(1)

OSTERMANN J,BORMANS J,LIST P,et al.Video coding with H.264/AVC:tools,performance,and complexity[J].IEEE Circuits and Systems Magazine,2004(1):7-28.[2] Joint Video Team(JVT)of ISO/IEC MPEG and ITU-T VCEG.Draft ITU-T recommendation and final draft of joint video specification(ITU-T Ree.H,264 and ISO/IEC 14496-10 AVC),ITU-T JVT-G050[S].2003.[3] MENG B.OSCAR A C.Fast intra prediction mode selection for 4×A blocks in H.264[C]//IEEE International Conference on Acoustics,Speech,and Signal Processing.Hong Kong:[s.n.],2003:389-392.[4] YANG C L,PO L M.A fast H.264 intra prediction algorithm using maemblock properties[C]//IEEE International Conference on Image Processing.Singapore:[s.n.],2004:461-464.[5] PAN F,LIN X.Fast mode decision algorithm for intra prediction in H.264/AVC video coding[J].IEEE Transactions on Circuits and Systems for Video Technology,2005,15(3):813-823.[6] PAN F,LIN X.A directional field based fast intra mode decision algorithm for H.264 video coding[C]//IEEE International Conferenee Multimedia and Expo.Taipei:[s.n.],2004:1 147-1 150.[7] ANDY C Y,NGAN K N,GRAHAM M.Efficient intra-and inter-mode selection algorithms for H.264/AVC[J].Journal of Visual Communication and Image Representation,Special Issue on Emerging H.264/AVC Video Coding Standard,2006,17(2):322-343.[8] KIM C,SHIH H,KUO C.Fast H.264 intra-prediction mode selection using joint spatial and transform domain features[J].Journal of Visual Communication and Image Representation,2006,17(2):291-310.[9] SULLIVAN G J,WIEGAND T.Rate-distortion optimization for video compression[J].IEEE Signal Processing Magazine,1998,15(11):74-90.[10] SHEN B,SETHI I K.Direct feature extraction from compressed images[C]//Proceedings SPIE Storage Retrieval for Image and Video Databases IV.San Jose:[s.n.],1996(4):2670-2676.[11] LEE S W,KIM Y M.Fast scene change detection using direct feature extraction from MPEG compressed video[J].IEEE Transactions on Multimedia,2000,2(4):240-254.[12] CHANG T S,KUNG C S,JEN C W.A simple processor core design for Dcr/IDCT[J].IEEE Transactions on Circuits and Systems for Video Technology,2000,10(3):439-447.

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文章访问数: 1269
HTML全文浏览量: 55
PDF下载量: 272
被引次数: 0

基于频域特征的H.264/AVC帧内编码模式快速预测

作者简介: 王正宁(1979- ),男,博士研究生,研究方向为视频压缩与传输,E-mail:znwang@home.swjtu.edu.cn

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出版历程

Fast H.264/AVC Intra-Prediction Using Frequency Domain Features

计量

出版历程

目录

作者简介:
王正宁(1979- ),男,博士研究生,研究方向为视频压缩与传输,E-mail:znwang@home.swjtu.edu.cn