TY - GEN
T1 - Rate control for spatial scalable coding in SVC
AU - Xu, Long
AU - Gao, Wen
AU - Ji, Xiangyang
AU - Zhao, Debin
AU - Ma, Siwei
PY - 2007
Y1 - 2007
N2 - In this paper, we present a new rate control scheme for spatial and coarse-grain-SNR (CGS) scalable coding in SVC. Firstly, a rate-distortion (R-D) model is provided for I/P/B frames according to mode analysis. Secondly, an efficient hierarchical bit allocation and two-pass refinement of quantization parameter (QP) are proposed. Thirdly, a standard deviation prediction between inter layers is presented. The experiments show that the proposed rate control scheme can achieve an average PSNR improvement of 0.3-0.7dB on average in terms of PSNR against the anchor scheme using hierarchical B frame coding with fixed QP. Meanwhile, the mismatch between target bit rate and real coded bit rate does not exceed 2%.
AB - In this paper, we present a new rate control scheme for spatial and coarse-grain-SNR (CGS) scalable coding in SVC. Firstly, a rate-distortion (R-D) model is provided for I/P/B frames according to mode analysis. Secondly, an efficient hierarchical bit allocation and two-pass refinement of quantization parameter (QP) are proposed. Thirdly, a standard deviation prediction between inter layers is presented. The experiments show that the proposed rate control scheme can achieve an average PSNR improvement of 0.3-0.7dB on average in terms of PSNR against the anchor scheme using hierarchical B frame coding with fixed QP. Meanwhile, the mismatch between target bit rate and real coded bit rate does not exceed 2%.
UR - https://www.scopus.com/pages/publications/84898076910
M3 - 会议稿件
AN - SCOPUS:84898076910
SN - 9789898109057
T3 - PCS 2007 - 26th Picture Coding Symposium
BT - PCS 2007 - 26th Picture Coding Symposium
T2 - 26th Picture Coding Symposium, PCS 2007
Y2 - 7 November 2007 through 9 November 2007
ER -