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

Chia-Hsin Chan; Chun-Chuan Tu; Wen-Jiin Tsai

doi:10.1117/1.JEI.26.1.013006

12 January 2017 Improve load balancing and coding efficiency of tiles in high efficiency video coding by adaptive tile boundary

Chia-Hsin Chan, Chun-Chuan Tu, Wen-Jiin Tsai

Author Affiliations +

Journal of Electronic Imaging, Vol. 26, Issue 1, 013006 (January 2017). https://doi.org/10.1117/1.JEI.26.1.013006

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.

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Chia-Hsin Chan, Chun-Chuan Tu, and Wen-Jiin Tsai "Improve load balancing and coding efficiency of tiles in high efficiency video coding by adaptive tile boundary," Journal of Electronic Imaging 26(1), 013006 (12 January 2017). https://doi.org/10.1117/1.JEI.26.1.013006

Received: 15 July 2016; Accepted: 16 December 2016; Published: 12 January 2017

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