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一种新的用于屏幕图像编码的HEVC帧内模式

陈先义 赵利平 林涛

陈先义, 赵利平, 林涛. 一种新的用于屏幕图像编码的HEVC帧内模式[J]. 电子与信息学报, 2015, 37(11): 2685-2690. doi: 10.11999/JEIT150261
引用本文: 陈先义, 赵利平, 林涛. 一种新的用于屏幕图像编码的HEVC帧内模式[J]. 电子与信息学报, 2015, 37(11): 2685-2690. doi: 10.11999/JEIT150261
Chen Xian-yi, Zhao Li-ping, Lin Tao. A New HEVC Intra Mode for Screen Content Coding[J]. Journal of Electronics & Information Technology, 2015, 37(11): 2685-2690. doi: 10.11999/JEIT150261
Citation: Chen Xian-yi, Zhao Li-ping, Lin Tao. A New HEVC Intra Mode for Screen Content Coding[J]. Journal of Electronics & Information Technology, 2015, 37(11): 2685-2690. doi: 10.11999/JEIT150261

一种新的用于屏幕图像编码的HEVC帧内模式

doi: 10.11999/JEIT150261
基金项目: 

国家自然科学基金(61201226, 61271096),上海市自然科学基金(12ZR1433800)和高等学校博士学科点专项科研基金(20130072110054)

A New HEVC Intra Mode for Screen Content Coding

Funds: 

The National Natural Science Foundation of?China (61201226, 61271096)

  • 摘要: 由于传统编码方式对屏幕图像的编码效果不佳,该文根据屏幕图像包含大量非连续色调内容的特点,在HEVC(High Efficiency Video Coding)基础上,提出一种新的帧内编码模式称为帧内串匹配(Intra String Copy, ISC)。基本思想是在HEVC的编码单元(Coding Unit, CU)级别上,引入字典编码工具:编码时,在一定长度的字典窗口内,利用散列表,对当前CU内的像素,进行串搜索和匹配;解码时,根据像素串匹配的距离和匹配长度,在重建缓存内复制相应位置像素重建当前CU像素。实验结果表明,在编码复杂度增加很少的情况下,对于典型的屏幕图像测试序列,在全帧内(All Intra, AI),随机接入(Random Access, RA),低延迟(Low-delay B, LB)3种配置下,有损编码模式比HEVC分别节省码率15.1%, 12.0%, 8.3%,无损编码模式分别节省码率23.3%, 14.9%, 11.6%。
  • Zhou M H, Gao W, Jiang M Q, et al.. HEVC lossless coding andimprovements[J]. IEEE Transactions on Circuits and Systems for Video Technology, 2012, 22(12): 1839-1843.
    Budagavi M and Kwon D K. Video coding using intra motion compensation[C]. Joint Collaborative Team on Video Coding 13th Meeting, Incheon, 2013: JCTVC-M0350.
    Pang C, Sole J, Guo L W, et al.. Intra motion compensation with 2-d MVs[C]. Joint Collaborative Team on Video Coding 14th Meeting, Vienna, 2013: JCTVC-N0256.
    Sullivan G and Ohm J R. Meeting report of the fifth meeting of the Joint Collaborative Team on Video Coding (JCT-VC) [C]. Joint Collaborative Team on Video Coding 5th Meeting, Geneva, 2011: JCTVC-E600.
    Lin T, Zhang P J, Wang S H, et al.. Mixed chroma Sampling-rate high efficiency video coding for full- chromascreen content[J]. IEEE Transactions on Circuits and Systems for Video Technology, 2013, 23(1): 173-185.
    张培君, 王淑慧, 周开伦, 等. 融合全色度LZMA与色度子采样HEVC的屏幕图像编码[J]. 电子与信息学报, 2013, 35(1): 196-202.
    Zhang P J, Wang S H, Zhou K L, et al.. Screen content coding by combined full-chroma LZMA and subsampled- chromaHEVC[J]. Journal of Electronics Information Technology, 2013, 35(1): 196-202.
    Lin T, Wang S H, Zhang P J, et al.. P2M based dual-coder extension of HEVC[C]. Joint Collaborative Team on Video Coding 12th Meeting, Geneva, 2013: JCTVC-L0303.
    Sullivan G J, Ohm J R, Han W J, et al.. Overview of the high efficiency video coding (HEVC) standard[J]. IEEE Transactions on Circuits and Systems for Video Technology, 2012, 22(12): 1649-1668.
    Bossen F, Flynn D, Sharman K, et al.. Test Software [CP/OL]. https://hevc.hhi.fraunhofer.de/svn/svn_HEVCS oftware/tags/HM-14.0+RExt-7.0+SCM-1.0, 2014.
    Yu H P, Cohen R, Rapaka K, et al.. Common conditions for screen content coding tests[C]. Joint Collaborative Team on Video Coding 17th Meeting, Valencia, 2014: JCTVC-Q1015.
    Yu H, Cohen R, Rapaka K, et al.. Test Sequences[DB/OL]. ftp://hevc@ftp.tnt.uni-hannover.de/testsequences /FrExt-candidate-sequences/screen_content/ScExt-TestSequences, 2014.
    Bjntegaard G. Calculation of average PSNR differences between RD-Curves[C]. Video Coding Experts Group 13th Meeting, Austin, 2001: VCEG-M33.
    Bjntegaard G. Improvements of the BD-PSNR model[C]. Video Coding Experts Group 35th Meeting, Berlin, 2008: VCEG-AI11.
    Li B and Xu J Z. SCCE4: Cross-check of test 3.3[C]. Joint Collaborative Team on Video Coding 18th Meeting, Sapporo, 2014: JCTVC-R0060.
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出版历程
  • 收稿日期:  2015-02-22
  • 修回日期:  2015-06-10
  • 刊出日期:  2015-11-19

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