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Low-complexity adaptive block-size transform based on extended transforms

  • Qi Honggang*
  • , Gao Wen
  • , Ma Siwei
  • , Zhao Debin
  • , Ji Xiangyang
  • *Corresponding author for this work

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

Abstract

In this paper, a low-complexity 8×8/4×4 Adaptive Blocksize Transform (ABT) scheme is tentatively proposed for the Chinese Audio and Video coding Standard (AVS)1. In the proposed ABT scheme, an integer 8×8 transform is derived from the integer 4×4 transform used in AVS according to a transform extension principle. The 8×8 transform not only has high energy compacted property but also can be merely implemented within several additions and shifts, and all intermediate results are limited with 16-bit. The 8×8 transform and 4×4 transform can be merged together and share the same scale matrix so that the hardware units and storage resources are efficiently saved for both encoder and decoder. The experimental results on numerous sequences show that the proposed ABT scheme can achieves significant performance improvement for AVS.

Original languageEnglish
Title of host publication2006 IEEE International Conference on Multimedia and Expo, ICME 2006 - Proceedings
Pages129-132
Number of pages4
DOIs
StatePublished - 2006
Externally publishedYes
Event2006 IEEE International Conference on Multimedia and Expo, ICME 2006 - Toronto, ON, Canada
Duration: 9 Jul 200612 Jul 2006

Publication series

Name2006 IEEE International Conference on Multimedia and Expo, ICME 2006 - Proceedings
Volume2006

Conference

Conference2006 IEEE International Conference on Multimedia and Expo, ICME 2006
Country/TerritoryCanada
CityToronto, ON
Period9/07/0612/07/06

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