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Volume 41 Issue 7
Jul.  2015
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Journal of Beijing University of Aeronautics and Astronautics  > 2015  >  41(7): 1353-1358.
FENG Lixin, TAO Pin, WEN Jiangtao, et al. Lossless intra coding on whole frame for screen content video based on template matching[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(7): 1353-1358. doi: 10.13700/j.bh.1001-5965.2014.0529(in Chinese)
Citation: FENG Lixin, TAO Pin, WEN Jiangtao, et al. Lossless intra coding on whole frame for screen content video based on template matching[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(7): 1353-1358. doi: 10.13700/j.bh.1001-5965.2014.0529(in Chinese)
shu

Lossless intra coding on whole frame for screen content video based on template matching

doi: 10.13700/j.bh.1001-5965.2014.0529

  • National Laborotary for Information Science and Technology, TNList, Tsinghua University, Beijing 100084, China

  • Received Date: 28 Apr 2014
  • Rev Recd Date: 25 Oct 2014
  • Publish Date: 20 Jul 2015
    Abstract
  • The-state-of-art video compression standards, such as H.264 and high efficiency video coding (HEVC) are mainly designed towards the camera-captured video. However, screen content (SC) video is created by the computer without noise, which needs higher efficiency than the camera-captured video. SC picture contains more structural similarity in contrast to camera-captured picture which could be used to improve the intra-picture compression ratio. A template matching method (TMM) was proposed by exploiting this similarity for SC intra lossless picture. The 21 pixel points template and the high efficiency 24-bits hash table were designed in TMM intra frame coding. For every picture, the first step was to use template matching for every pixel, and then speed up the matching processing by hash function, finally encode the residual picture by entropy coding. Experimental results show that TMM can double the lossless compression ratio compared to HEVC range extensions version 4.1 and reduce the compression time by half.

     

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