Temporal-Layer-Motivated Lambda Domain Picture Level Rate Control for Random-Access Configuration in H.265/HEVC

Gong, Y, Wan, S, Yang, K, Wu, H and Liu, Y 2019, 'Temporal-Layer-Motivated Lambda Domain Picture Level Rate Control for Random-Access Configuration in H.265/HEVC', IEEE Transactions on Circuits and Systems for Video Technology, vol. 29, no. 1, pp. 156-170.


Document type: Journal Article
Collection: Journal Articles

Title Temporal-Layer-Motivated Lambda Domain Picture Level Rate Control for Random-Access Configuration in H.265/HEVC
Author(s) Gong, Y
Wan, S
Yang, K
Wu, H
Liu, Y
Year 2019
Journal name IEEE Transactions on Circuits and Systems for Video Technology
Volume number 29
Issue number 1
Start page 156
End page 170
Total pages 15
Publisher IEEE
Abstract Rate control is a key technique for video communication systems. The aim of rate control is to transmit the best possible quality video sequences under various restrictions, such as channel bandwidth, buffer capacity, maximum time delay allowed for a given service, and so on. The $\lambda $ domain rate control technique ( $\lambda $ -RC) has been integrated into the latest High Efficiency Video Coding standard (H.265/HEVC) test model, due to its accurate bit estimation and high rate-distortion performance. However, it is found that the $\lambda $ -RC is not the optimal choice under the random-access configuration. When the random-access configuration is used, pictures are organized into temporal layers, where pictures in different layers are of different importance in terms of prediction. In this paper, a picture level lambda domain rate control technique for the random-access configuration in H.265/HEVC is proposed. The influence of temporal layers is effectively considered in the proposed algorithm referred to as TL- $\lambda $ -PRC. Experimental results verify that the proposed TL- $\lambda $ -PRC is efficient in coding performance and accurate in bit estimation. Compared with the $\lambda $ -RC with the fixed ration bit allocation which has been implemented in the test model of H.265/HEVC (HM 14.0), TL- $\lambda $ -PRC achieves an average reduction of 4.10% and 3.49% for slow motion and fast motion sequences, respectively, in BD-rate (Bjontegaard-Delta bitrate) with more accurate bit estimation. The performance of different algorithms in terms of algorithm complexity and quality fluctuation are also carefully analyzed in this contribution.
Subject Image Processing
Coding and Information Theory
Video Communications
Keyword(s) H.265/HEVC
Random-access configuration
rate control
temporal-layer-motivated
video coding
DOI - identifier 10.1109/TCSVT.2017.2769703
Copyright notice © 2017 IEEE
ISSN 1051-8215
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