Early MERGE mode decision based on motion estimation and hierarchical depth correlation for HEVC

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

111 Scopus Citations
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Author(s)

  • Zhaoqing Pan
  • Sam Kwong
  • Ming-Ting Sun
  • Jianjun Lei

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number6823693
Pages (from-to)405-412
Journal / PublicationIEEE Transactions on Broadcasting
Volume60
Issue number2
Online published30 May 2014
Publication statusPublished - Jun 2014

Abstract

The high efficiency video coding (HEVC) is the latest video coding standard, which adopts the quadtree structure based coding tree unit (CTU) to improve the coding efficiency. In the HEVC encoding process, the CTU is recursively split into the (8×8) size coding units (CUs) from the (64×64) size CU. Along with the increased number of the sizes of the CUs, the number of coding modes has been greatly increased, which results in high computational complexity in the HEVC encoder. In this paper, we propose an early MERGE mode decision algorithm to reduce the computational complexity of the HEVC encoder. Firstly, based on the all-zero block (AZB) and the motion estimation (ME) information of the INTER 2N (times) 2N mode, an early MERGE mode decision is proposed for the root CUs (i.e., (64×64) size CUs). Then, an early MERGE mode decision is proposed for the children CUs (i.e., (32×32) , (16×16) , and (8×8) size CUs) by considering the mode selection correlation between the root CU and the children CUs. To maximize the computational complexity reduction, when the root CUs are encoded in the non-MERGE modes, the AZB and the ME information are also used for early termination of the children CUs. Experimental results demonstrate that compared to the state-of-the-art published method, the proposed algorithm can achieve about 35% encoding time on average saving while the rate distortion performance degradation is negligible. © 1963-12012 IEEE.

Research Area(s)

  • early termination, HEVC, MERGE mode, mode decision, video coding

Citation Format(s)

Early MERGE mode decision based on motion estimation and hierarchical depth correlation for HEVC. / Pan, Zhaoqing; Kwong, Sam; Sun, Ming-Ting et al.
In: IEEE Transactions on Broadcasting, Vol. 60, No. 2, 6823693, 06.2014, p. 405-412.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review