An Efficient Rate-Distortion Optimization Method for Low-Delay Configuration in H.265/HEVC Based on Temporal Layer Rate and Distortion Dependence

Yang, K, Gong, Y, Ma, M and Wu, H 2019, 'An Efficient Rate-Distortion Optimization Method for Low-Delay Configuration in H.265/HEVC Based on Temporal Layer Rate and Distortion Dependence', IEEE Transactions on Circuits and Systems for Video Technology, vol. 29, no. 4, pp. 1230-1236.


Document type: Journal Article
Collection: Journal Articles

Title An Efficient Rate-Distortion Optimization Method for Low-Delay Configuration in H.265/HEVC Based on Temporal Layer Rate and Distortion Dependence
Author(s) Yang, K
Gong, Y
Ma, M
Wu, H
Year 2019
Journal name IEEE Transactions on Circuits and Systems for Video Technology
Volume number 29
Issue number 4
Start page 1230
End page 1236
Total pages 7
Publisher IEEE
Abstract Currently, as one of the most important video coding structures, the low-delay (LD) configuration has been widely adopted in the video communication systems, such as video surveillance and video conferencing systems. The rate-distortion optimization (RDO) is also a crucial technique for improving the performance of video coding. The RDO performance of H.265/HEVC with the LD configuration is significantly affected by the temporal dependence. This letter examines the dependence of rate and distortion among temporal layers in H.265/HEVC with the LD configuration. An efficient RDO method is then proposed based on temporal dependence, where the optimized Lagrangian multipliers are estimated by adaptively selecting the scaling factors according to the video motion characteristics pertaining to different temporal layers. The experimental results show that compared with the RDO method adopted in the H.265/HEVC test model (i.e., HM), the proposed RDO method can achieve the average BD-rate reductions of 6.4% and 5.8% for the LD P and LD B configurations, respectively.
Subject Coding and Information Theory
Video Communications
Image Processing
Keyword(s) H.265/HEVC
low-delay configuration
rate-distortion optimization
Lagrangian multiplier
temporal layer dependency.
DOI - identifier 10.1109/TCSVT.2019.2896664
Copyright notice © 2019 IEEE
ISSN 1051-8215
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