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Volume 33 Issue 02
Feb.  2007
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Journal of Beijing University of Aeronautics and Astronautics  > 2007  >  33(02): 219-223.
Meng Qinglei, Yao Chunlian, Song Jianbin, et al. Fast selective algorithm of Intra prediction for H.264/AVC[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(02): 219-223. (in Chinese)
Citation: Meng Qinglei, Yao Chunlian, Song Jianbin, et al. Fast selective algorithm of Intra prediction for H.264/AVC[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(02): 219-223. (in Chinese)
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Fast selective algorithm of Intra prediction for H.264/AVC

  • School of Computer Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 21 Mar 2006
  • Publish Date: 28 Feb 2007
    Abstract
  • The newest video coding standard H.264/AVC provides several predic ting modes and directions for Intra prediction in the spatial region, and the op timal mode was selected by rate-distortion optimization(RDO) with high coding c omplexity. In order to solve this problem, the fast selection algorithm was prop osed from different aspects: Firstly, for luminance mode selection, the method w as proposed that utilizes the image entropy value to predict the mode of the mac roblock, and updates the threshold adaptively by a sliding window. Secondly, int ermediate computing results were reused to reduce the predicting directions. Fin ally, in the RDO performance, the arithmetic structure of Intra prediction was c hanged with calculating the best chromance mode separately. Experimental results s how that with similar distortion performance, the algorithm that adopt the above three strategy can efficiently reduce the computational complexity up to 76% wi th 2.6% increase of bits rate averagely.

     

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  • [1] ISO/IEC FDIS 14496-10. Information technology-coding of audio-visual objects part 10:advanced video coding[S] [2] Ravasi M, Mattavelli M, Clerc C A. Computational complexity comparison of M PEG4 and JVT codecs Joint Video Team (JVT) of ISO/IEC MPEG & ITU-T VCEG Meeting. Klagenfurt, Austria:,2002 [3] ITU-T. Draft ITU-T recommendation H.263 version 2:video coding for low bit rate communication[S] [4] ISO/IEC 14496-2. Committee draft, information technology coding of audio visual objects:visual[S] [5] Pan Feng, Lin Xiao, Susanto R,et al. Fast mode decision for Intra prediction JVT Meeting. Pattaya, Thailand:,2003 [6] Kim Changsung, Shih H H, Kuo C J. Multistage mode decision for Intra pred iction in H.264 codec[J]. Proc of Visual Communications and Image Processing, 2004, 5308 (18):355-363 [7] 倪伟,郭宝龙,杨镠.一种适用于H.264/AVC的自适应空域帧内预测算法 ,计算机学报, 2005, 28 (11):1853-1860 Ni Wei, Guo Baolong, Yang Liu. An adaptive Intra prediction algorithm in spatial domain space for H.264/AVC[J]. Chinese Journal of Computers, 2005, 28 (11):18 53-1860(in Chinese) [8] 谢晶,贾克斌.一种基于二维直方图的H.264/AVC快速帧内预测判决算法 .电子与信息学报, 2005, 27(7):1053-1057 Xie Jing, Jia Kebin. A fast Intra-frame prediction algorithm based on the two- dimensional histogram for H.264/AVC[J]. Journal of Electronics & Information T echnology, 2005, 27(7):1053-1057 (in Chinese)
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