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1. 发明申请

US20090074075A1 EFFICIENT REAL-TIME RATE CONTROL FOR VIDEO COMPRESSION PROCESSES 审中-公开
标题翻译：视频压缩过程的高效实时速率控制
公开(公告)号：US20090074075A1
公开(公告)日：2009-03-19
申请号：US11855841
申请日：2007-09-14
申请人： Oscar Chi Lim Au , Dicky Chi Wah Wong
发明人： Oscar Chi Lim Au , Dicky Chi Wah Wong
IPC分类号： H04N7/12
CPC分类号： H04N19/142 , H04N19/124 , H04N19/149 , H04N19/176
摘要： In advanced video coding standards such as H.264, macro-blocks belong to more advanced MB types, such as skipped and non-skipped macro-blocks. In non-skipped macro-blocks, the encoder determines whether each of 8×8 luminance sub-blocks and 4×4 chrominance sub-block of a macro-block is to be encoded, giving the different number of sub-blocks at each macro-block encoding times. It has been found that the correlation of bits between consecutive frames is high. This correlation is even higher after macro-block normalization by considering advanced macro-block types. Based on this bit characteristic, a fast real-time H.264 rate control scheme is herein described. The empirical example results suggest that this scheme can achieve PSNR gain over JM10.2.
摘要翻译：在诸如H.264的高级视频编码标准中，宏块属于更高级的MB类型，例如跳过和非跳过的宏块。在非跳过的宏块中，编码器确定宏块的8×8亮度子块和4×4色度子块中的每一个是否被编码，在每个宏块编码次数给出不同数量的子块。已经发现，连续帧之间的比特的相关性很高。通过考虑高级宏块类型，宏块归一化后，这种相关性更高。基于该比特特性，本文描述了快速实时H.264速率控制方案。实证结果表明，该方案可以实现超过JM10.2的PSNR增益。

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