Improve load balancing and coding efficiency of tiles in high efficiency video coding by adaptive tile boundary

Chia Hsin Chan*, Chun Chuan Tu, W. J. Tsai

*Corresponding author for this work

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

High efficiency video coding (HEVC) not only improves the coding efficiency drastically compared to the well-known H.264/AVC but also introduces coding tools for parallel processing, one of which is tiles. Tile partitioning is allowed to be arbitrary in HEVC, but how to decide tile boundaries remains an open issue. An adaptive tile boundary (ATB) method is proposed to select a better tile partitioning to improve load balancing (ATB-LoadB) and coding efficiency (ATB-Gain) with a unified scheme. Experimental results show that, compared to ordinary uniform-space partitioning, the proposed ATB can save up to 17.65% of encoding times in parallel encoding scenarios and can reduce up to 0.8% of total bit rates for coding efficiency.

Original languageEnglish
Article number013006
JournalJournal of Electronic Imaging
Volume26
Issue number1
DOIs
StatePublished - 1 Jan 2017

Keywords

  • encoder optimization
  • high efficiency video coding
  • tile
  • video compression

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