首页> 外文会议>Advances in Multimedia Information Processing - PCM 2008 >VLC Table Prediction Algorithm for CAVLC in H.264 Using the Characteristics of Mode Information
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VLC Table Prediction Algorithm for CAVLC in H.264 Using the Characteristics of Mode Information

机译:H.264中基于模式信息特征的CAVLC VLC表预测算法。

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摘要

The most recent H.264 video coding standard adopted context-based adaptive variable length coding (CAVLC) as the entropy coding tool. By combining adaptive variable length coding (VLC) with context modeling, we can achieve a better coding performance. However, CAVLC in H.264 has a problem that correctness of VLC table prediction is low. In this paper, we propose a new VLC table prediction algorithm using the correlation of coding mode between the current and neighboring blocks and the statistics of mode distribution in both intra and inter frames. Moreover, we can further increase correctness of VLC table prediction considering the structural characteristics of the mode information in inter frame. Experimental results show that the proposed algorithm increases correctness of VLC table prediction by 10.07% and reduces the bit rate by 1.21% on average.
机译:最新的H.264视频编码标准采用基于上下文的自适应可变长度编码(CAVLC)作为熵编码工具。通过将自适应可变长度编码(VLC)与上下文建模相结合,我们可以获得更好的编码性能。然而,H.264中的CAVLC具有VLC表预测的正确性低的问题。在本文中,我们提出了一种新的VLC表预测算法,该算法利用当前块与相邻块之间的编码模式的相关性以及帧内和帧间模式分布的统计信息。此外,考虑帧间模式信息的结构特征,我们可以进一步提高VLC表预测的正确性。实验结果表明,该算法将VLC表预测的正确性提高了10.07%,平均降低了比特率1.21%。

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