Improving the discrete cosine transform by the sign symbol feature in H.265/HEVC

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

DCT compression is widely used in H.265/HEVC for the video coding processing. This paper deals with enhancing the compression ratio by improving the Discrete Cosine Transform (DCT) by taking into account the sign-symbol (result after standard DCT transform); this is done by evaluating the derivative of sample data to determine the DCT matrix improvement. It is shown that our proposed can be embedded into standard DCT coefficients and is compatible with the feature in the video coding. Experiments show that the proposed method gives an improvement in computing requirements and can achieve a reasonable compromise between coding quality and efficiency. It offers no divergence from the H.265/HEVC standards and can be used in current systems.

Original languageEnglish
Title of host publicationICGSP 2018 - Proceedings of 2018 the 2nd International Conference on Graphic and Signal Proceesing
PublisherAssociation for Computing Machinery
Pages57-62
Number of pages6
ISBN (Electronic)9781450363860
DOIs
Publication statusPublished - 6 Oct 2018
Event2nd International Conference on Graphic and Signal Proceesing, ICGSP 2018 - Sydney, Australia
Duration: 6 Oct 20188 Oct 2018

Publication series

NameACM International Conference Proceeding Series

Conference

Conference2nd International Conference on Graphic and Signal Proceesing, ICGSP 2018
Country/TerritoryAustralia
CitySydney
Period6/10/188/10/18

Keywords

  • DCT
  • Derivative
  • Sign-symbol feature
  • Video coding

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