Pseudo 2D String Matching Technique for High Efficiency Screen Content Coding
Pseudo 2D String Matching Technique for High Efficiency Screen Content Coding
复制标题
用于高效屏幕内容编码的伪2D字符串匹配技术
DOI:
10.1109/tmm.2015.2512539
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发表时间:
2016-03
影响因子:
7.3
通讯作者:
Chen, Xianyi
中科院分区:
文献类型:
--
作者:
Lin, Tao;Zhou, Kailun;Wang, Shuhui;Chen, Xianyi
This paper proposes a pseudo 2D string matching (P2SM) technique for high efficiency screen content coding (SCC). The technique uses a primary reference buffer (PRB) and a secondary reference buffer (SRB) for string matching and string copying. In the encoder, optimal reference string searching is performed in both PRB and SRB, and either a PRB or an SRB string is selected as an optimal reference string on a string-by-string basis. If no reference string of at least one pixel is founded for a current pixel, then the current pixel is coded as an unmatched pixel. Compared with HM-16.4${+}$SCM-4.0 reference software, the proposed P2SM technique achieves up to 37.7% Y BD-rate reduction for a screen snapshot of a spreadsheet. On average, using HEVC SCC common test condition and YUV test sequences in text and graphics with motion category, the proposed technique achieves Y BD-rate reduction of 7.7%, 5.0%, 2.6% for all intra (AI), random access (RA) and low-delay B (LB) configurations, respectively in lossy coding with both intra block copy (IBC) and P2SM having the same 4 coding tree units (CTUs) searching range, and bit-rate saving of 6.0%, 3.9%, 3.1% for AI, RA, LB configurations, respectively in lossless coding with IBC having full frame searching range while P2SM having only 2 CTUs searching range, at very low additional encoding and decoding complexity.
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影响因子:
7.3
作者:
Weijia Zhu;Wenpeng Ding;Jizheng Xu;Yunhui Shi;Baocai Yin
通讯作者:
Baocai Yin
DOI:
10.1109/tcsvt.2012.2223871
发表时间:
2013
影响因子:
8.4
作者:
Zhang, Peijun;Wang, Shuhui;Zhou, Kailun;Chen, Xianyi
通讯作者:
Chen, Xianyi
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