H.264视频编码器的禁止符号算术编码和优化的自适应上下文树建模(GRASP算法)

2007 International Conference on Signal Processing, Communications and Networking Pub Date : 2007-11-05 DOI:10.1109/ICSCN.2007.350679

E. Logashanmugam, B. Sreejaa, R. Ramachandran

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引用次数: 0

摘要

本文提出在H.264编码器中应用一种带有禁止符号的自适应上下文树加权方法。采用带禁止符号的算术编码和网格搜索技术，估计出最佳传输码字。与H.264标准中定义的上下文建模不同，带有禁止符号的算术代码使用了CTW方法。用GRASP算法代替CABAC算法，实验结果表明，采用H.264/AVC CABAC算法和算术编码获得的编码增益接近或优于前者

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Arithmetic Coding with Forbidden Symbol and Optimized Adaptive Context Tree Modeling (GRASP Algorithm) for H.264 Video Coders

In this paper we propose applying an adaptive context tree weighting method with a forbidden symbol in the H.264 coder. Arithmetic codes with a forbidden symbol and a trellis search techniques are employed on an order to estimate the best transmitted codeword. Instead of using the context modeling defined in the H.264 standard, the arithmetic code with a forbidden symbol uses a CTW method. The CABAC algorithm is replaced by GRASP algorithm and the experimental results show that coding gains similar or superior to those obtained with the H.264/AVC CABAC algorithm and arithmetic coding

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2007 International Conference on Signal Processing, Communications and Networking

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