Rate-Distortion-Optimization-Based Quantization Parameter Cascading Technique for Random-Access Configuration in H.265/HEVC

Yanchao Gong, Shuai Wan, Kaifang Yang, Yuan Yang, Bo Li

科研成果: 期刊稿件文章同行评审

29 引用 (Scopus)

摘要

The random-Access configuration is employed in H.265/HEVC video coding to make inter-frame prediction more efficient. The coding efficiency under the random-Access configuration is closely related to the quantization parameter cascading (QPC) technique which determines the QP for encoding pictures in different temporal layers. The present QPC technique for the random-Access configuration in H.265/HEVC is not optimized. In this paper, first, a rate-distortion-optimization-based technique for QPC, referred to as RDO-QPC, is proposed for the random-Access configuration in H.265/HEVC. Based on the results from RDO-QPC, a simplified QPC technique, referred to as SRDO-QPC, is proposed. The experimental results verify the efficiency of the proposed two QPC techniques. Compared with the original configuration of QPC in H.265/HEVC, RDO-QPC achieves an average gain of 0.19 dB in \Delta \text {PSNR} and an average reduction of 4.87% in \Delta \text {BR} , while SRDO-QPC achieves an average gain of 0.17 dB in \Delta \text {PSNR} and an average reduction of 4.32% in \Delta \text {BR}. These two QPC techniques can both be used in practical situations, meeting different requirements of computational complexity.

源语言英语
文章编号7428876
页(从-至)1304-1312
页数9
期刊IEEE Transactions on Circuits and Systems for Video Technology
27
6
DOI
出版状态已出版 - 6月 2017

指纹

探究 'Rate-Distortion-Optimization-Based Quantization Parameter Cascading Technique for Random-Access Configuration in H.265/HEVC' 的科研主题。它们共同构成独一无二的指纹。

引用此