A fixed-complexity HEVC inter mode filtering algorithm based on distribution of IME-FME cost ratio

Jinjia Zhou, Yizhou Zou, Dajiang Zhou, Satoshi Goto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Motion Estimation (ME) is a key performance bottleneck of H.265/HEVC encoding. In implementing ME, a fixed or bounded complexity is often desired for efficient pipelining and parallelism. We present a fixed-complexity mode filtering algorithm to reduce the complexity of fractional ME (FME). Firstly, a layer filtering is applied to select the mode candidates. Secondly, the ratio of integer-fractional ME costs (Rf/i) is defined and the confidence interval of Rf/i is utilized for further mode selection. Finally, an algorithm to fix the complexity is applied. Experimental results show that the FME encoding time is reduced by 83.3% with slightly BD-rate increase.

Original languageEnglish
Title of host publicationProceedings - IEEE International Symposium on Circuits and Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages617-620
Number of pages4
Volume2015-July
ISBN (Print)9781479983919
DOIs
Publication statusPublished - 2015 Jul 27
EventIEEE International Symposium on Circuits and Systems, ISCAS 2015 - Lisbon, Portugal
Duration: 2015 May 242015 May 27

Other

OtherIEEE International Symposium on Circuits and Systems, ISCAS 2015
CountryPortugal
CityLisbon
Period15/5/2415/5/27

Keywords

  • fractional motion estimation
  • H.265
  • HEVC
  • inter prediction
  • mode filtering
  • motion estimation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Zhou, J., Zou, Y., Zhou, D., & Goto, S. (2015). A fixed-complexity HEVC inter mode filtering algorithm based on distribution of IME-FME cost ratio. In Proceedings - IEEE International Symposium on Circuits and Systems (Vol. 2015-July, pp. 617-620). [7168709] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCAS.2015.7168709