Transformed-domain mode selection for H.264 intra-prediction improvement

Yung Chiang Wei, Jar Ferr Yang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


In this paper, a fast mode decision method for intraprediction is proposed to reduce the computational complexity of H.264/AVC encoders. With edge information, we propose a novel fast estimation algorithm to reduce the computation overhead of H.264/AVC for mode selection, where the edge direction of each coding block is detected from only part of the transformed coefficients. Hence, the computation complexity is greatly reduced. Experimental results show that the proposed fast mode decision method can eliminate about 81.34% encoding time for all intra-frame sequences with acceptable degradation of averaged PSNR and bitrates.

Original languageEnglish
Pages (from-to)825-835
Number of pages11
JournalIEICE Transactions on Information and Systems
Issue number3
Publication statusPublished - 2008 Mar

All Science Journal Classification (ASJC) codes

  • Software
  • Hardware and Architecture
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering
  • Artificial Intelligence


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