Mixed Chroma Sampling-Rate High Efficiency Video Coding for Full-Chroma Screen Content
Mixed Chroma Sampling-Rate High Efficiency Video Coding for Full-Chroma Screen Content
复制标题
适用于全色度屏幕内容的混合色度采样率高效视频编码
DOI:
10.1109/tcsvt.2012.2223871
复制
发表时间:
2013
影响因子:
8.4
通讯作者:
Chen, Xianyi
中科院分区:
文献类型:
--
作者:
Zhang, Peijun;Wang, Shuhui;Zhou, Kailun;Chen, Xianyi
Computer screens contain discontinuous-tone content and continuous-tone content. Thus, the most effective way for screen content coding (SCC) is to use two essentially different coders: a dictionary-entropy coder and a traditional hybrid coder. Although screen content is originally in a full-chroma (e.g., YUV444) format, the current method of compression is to first subsample chroma of pictures and then compress pictures using a chroma-subsampled (e.g., YUV420) coder. Using two chroma-subsampled coders cannot achieve high-quality SCC, but using two full-chroma coders is overkill and inefficient for SCC. To solve the dilemma, this paper proposes a mixed chroma sampling-rate approach for SCC. An original full-chroma input macroblock (coding unit) or its prediction residual is chroma-subsampled. One full-chroma base coder and one chroma-subsampled base coder are used simultaneously to code the original and the chroma-subsampled macroblock, respectively. The coder minimizing rate-distortion (R-D) is selected as the final coder for the macroblock. The two base coders are coherently unified and optimized to get the best overall coding performance and share coding components and resources as much as possible. The approach achieves very high visual quality with minimal computing complexity increment for SCC, and has better R-D performance than two full-chroma coders approach, especially in low bitrate.
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DOI:
10.1109/cisp.2010.5647270
发表时间:
2010-11
期刊:
2010 3rd International Congress on Image and Signal Processing
影响因子:
--
作者:
Shuhui Wang;Tao Lin
通讯作者:
Shuhui Wang;Tao Lin
DOI:
10.1109/icme.2009.5202873
发表时间:
2009-06
期刊:
2009 IEEE International Conference on Multimedia and Expo
影响因子:
--
作者:
Tao Lin;Shuhui Wang
通讯作者:
Tao Lin;Shuhui Wang
DOI:
10.1109/cisp.2009.5301019
发表时间:
2009-10
期刊:
2009 2nd International Congress on Image and Signal Processing
影响因子:
--
作者:
Shuhui Wang;Tao Lin
通讯作者:
Shuhui Wang;Tao Lin
影响因子:
10.6
作者:
Cuiling Lan;Guangming Shi;Feng Wu
通讯作者:
Cuiling Lan;Guangming Shi;Feng Wu
DOI:
--
发表时间:
2001
期刊:
--
影响因子:
--
作者:
G. Bjøntegaard
通讯作者:
G. Bjøntegaard