A Macroblock-Level Rate Control Algorithm for H.264/AVC Video Coding with context-adaptive MAD Prediction Model

Shuijiong Wu, Yiqing Wang, Takeshi Ikenaga

研究成果: Conference contribution

12 被引用数 (Scopus)

抄録

Rate control (RC) is crucial for video codec to control bit-stream such that the coding efficiency is maximized without violating the constraints imposed by the bandwidth, buffer size and the constant end-to-end delay. To solve MAD dilemma caused by data-dependency between RC and ratedistortion optimization (RDO), a Macroblock (MB) level rate control algorithm with context-adaptive mean absolute difference (MAD) prediction model is proposed in this paper. 2D sliding window combined with temporal ordering is used for model update, and the reference MAD is computed by considering spatial information relativity. Simulations based on JM software show that the proposed model achieves higher peak-signal-noise-ratio (PSNR) and more accurate rate match than the original JVT-G012 algorithm. A gain up to 0.63dB is observed on luminance PSNR, and 0.58dB on PSNR includes both luminance and chrominance components. Average gains are 0.35dB and 0.29dB, respectively. Meanwhile, the average rate mismatch is reduced by 88%.

本文言語English
ホスト出版物のタイトルProceedings - 2009 International Conference on Computer Modeling and Simulation, ICCMS 2009
ページ124-128
ページ数5
DOI
出版ステータスPublished - 2009 4 23
イベント2009 International Conference on Computer Modeling and Simulation, ICCMS 2009 - Macau, China
継続期間: 2009 2 202009 2 22

出版物シリーズ

名前Proceedings - 2009 International Conference on Computer Modeling and Simulation, ICCMS 2009

Conference

Conference2009 International Conference on Computer Modeling and Simulation, ICCMS 2009
CountryChina
CityMacau
Period09/2/2009/2/22

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Computer Science Applications
  • Software

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