TY - JOUR
T1 - Rate-Distortion-Optimization-Based Quantization Parameter Cascading Technique for Random-Access Configuration in H.265/HEVC
AU - Gong, Yanchao
AU - Wan, Shuai
AU - Yang, Kaifang
AU - Yang, Yuan
AU - Li, Bo
N1 - Publisher Copyright:
© 1991-2012 IEEE.
PY - 2017/6
Y1 - 2017/6
N2 - 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.
AB - 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.
KW - H.265/HEVC
KW - quantization parameter cascading (QPC)
KW - random-Access configuration
KW - rate-distortion (R-D) optimization
KW - video coding
UR - http://www.scopus.com/inward/record.url?scp=85020307819&partnerID=8YFLogxK
U2 - 10.1109/TCSVT.2016.2539718
DO - 10.1109/TCSVT.2016.2539718
M3 - 文章
AN - SCOPUS:85020307819
SN - 1051-8215
VL - 27
SP - 1304
EP - 1312
JO - IEEE Transactions on Circuits and Systems for Video Technology
JF - IEEE Transactions on Circuits and Systems for Video Technology
IS - 6
M1 - 7428876
ER -