Reducing the number of tested modes for inter mode decision in H.264/AVC and accelerating with multithreading

Po Hung Yeh*, Tsung Hsi Weng, Chung-Ping Chung

*Corresponding author for this work

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

Abstract

Mode decision at the encoder processing of H.264 is a bottleneck due to its time complexity. In this paper, we propose a new method to reduce the original 7 inter modes to 3. In particular, we identify the smallest 2 light-weight costs of inter modes, and check if they are neighbors or not, to determine whether to save or discard some of the modes. We also parallelize a part of the code to speed up the executing time. The experimental results demonstrate that the proposed methods improve the performance in terms of executing time, regardless of the video types in consideration, and still keep almost the same video quality with almost no change in encoded video size.

Original languageEnglish
Title of host publication2012 19th International Conference on Systems, Signals and Image Processing, IWSSIP 2012
Pages392-396
Number of pages5
StatePublished - 23 Jul 2012
Event2012 19th International Conference on Systems, Signals and Image Processing, IWSSIP 2012 - Vienna, Austria
Duration: 11 Apr 201213 Apr 2012

Publication series

Name2012 19th International Conference on Systems, Signals and Image Processing, IWSSIP 2012

Conference

Conference2012 19th International Conference on Systems, Signals and Image Processing, IWSSIP 2012
CountryAustria
CityVienna
Period11/04/1213/04/12

Keywords

  • cost
  • early termination
  • H.264
  • inter mode
  • mode decision
  • valley

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