Motion re-estimation for H.264/AVC video downscaling transcoding using EPZS algorithm

Chia Tien Lin, Yinyi Lin

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

2 Scopus citations

Abstract

This paper proposes an efficient motion re-estimation using enhanced predictive zonal search (EPZS) algorithm for H.264/AVC video downscaling transcoding to reduce computation cost while maintaining high coding performance. Three prediction motion vectors (PMV) using AAW, ABW and AWW approaches are defined based on CBP and MV information in original H.264/AVC coded videos. The proposed EPZS takes into account four MV predictors (including AAW, ABW and AWW predictors as well as median predictor defined in H.264/AVC). The experimental result reveals that the proposed EPZS algorithm achieves a significant reduction of 66% computation time while maintaining coding efficiency as good as fully decoding and re-encoding. The result also shows that the proposed algorithm outperforms the AWVM algorithm in all respects, including PSNR, bit-rate increment as well as computation saving.

Original languageEnglish
Title of host publicationICIP 2011
Subtitle of host publication2011 18th IEEE International Conference on Image Processing
Pages2109-2112
Number of pages4
DOIs
StatePublished - 2011
Event2011 18th IEEE International Conference on Image Processing, ICIP 2011 - Brussels, Belgium
Duration: 11 Sep 201114 Sep 2011

Publication series

NameProceedings - International Conference on Image Processing, ICIP
ISSN (Print)1522-4880

Conference

Conference2011 18th IEEE International Conference on Image Processing, ICIP 2011
Country/TerritoryBelgium
CityBrussels
Period11/09/1114/09/11

Keywords

  • Downscaling transcoding
  • EPZS
  • H.264/AVC
  • motion estimation

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