Early TU Split Termination in HEVC Based on Quasi-Zero-Block

DOI

10.2991/eeic-13.2013.106How to use a DOI?

Keywords

HEVC; early termination; TU split; residual quadtree (RQT); quasi-zero-block (QZB)

Abstract

The new introduced concept, transform tree or residual quadtree (RQT) in HEVC standard, brings high coding performance along with high computational complexity because the optimal TU partition is estimated in a rate-distortion sense at the encoder sides by testing all kinds of partitions. This paper focus on early TU split termination in terms of the tradeoff between computation and coding quality. An early TU split termination scheme based on quasi-zero-block (QZB) is proposed, which is defined by two aspects about the quantized transform coefficients; the sum of all absolute coefficients and the number of nonzero coefficients. Besides, the selective probability of every TU depth is calculated and analyzed. Experimental results show that the proposed method (HM-QZB) could achieve 22.8% reduction in encoding time and 50.59% reduction in TU processing time compared to the HEVC test model HM10.0 encoder with about 0.04dB BD-PSNR loss in coding performance.

Copyright

© 2013, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yunyu Shi
AU  - Zhiyong Gao
AU  - Xiaoyun Zhang
PY  - 2013/12
DA  - 2013/12
TI  - Early TU Split Termination in HEVC Based on Quasi-Zero-Block
BT  - Proceedings of the 3rd International Conference on Electric and Electronics
PB  - Atlantis Press
SP  - 450
EP  - 454
SN  - 1951-6851
UR  - https://doi.org/10.2991/eeic-13.2013.106
DO  - 10.2991/eeic-13.2013.106
ID  - Shi2013/12
ER  -