TY - GEN
T1 - A novel rate control scheme for panoramic video coding
AU - Liu, Yufan
AU - Xu, Mai
AU - Li, Chen
AU - Li, Shengxi
AU - Wang, Zulin
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/8/28
Y1 - 2017/8/28
N2 - The popularity of multi-view panoramic videos has been considerably increased for producing Virtual Reality (VR) content, due to its immersive visual experience. We argue in this paper that PSNR is less effective in assessing visual quality of compressed panoramic videos than Sphere-based PSNR (S-PNSR), in which sphere-to-plain mapping of panoramic videos is considered. Thus, the conventional rate control (R-C) schemes of 2-Dimensional (2D) video coding, which optimize on PSNR, are not suitable for panoramic video coding. To optimize S-PSNR, we propose in this paper a novel RC scheme for panoramic video coding. Specifically, we develop an S-PSNR optimization formulation with constraint on bit-rate. Then, a solution is provided to the developed formulation, such that bits can be allocated to each coding block for achieving optimal S-PSNR in panoramic video coding. Finally, the experiment results validate the effectiveness of the proposed RC scheme in improving S-PSNR of panoramic video coding.
AB - The popularity of multi-view panoramic videos has been considerably increased for producing Virtual Reality (VR) content, due to its immersive visual experience. We argue in this paper that PSNR is less effective in assessing visual quality of compressed panoramic videos than Sphere-based PSNR (S-PNSR), in which sphere-to-plain mapping of panoramic videos is considered. Thus, the conventional rate control (R-C) schemes of 2-Dimensional (2D) video coding, which optimize on PSNR, are not suitable for panoramic video coding. To optimize S-PSNR, we propose in this paper a novel RC scheme for panoramic video coding. Specifically, we develop an S-PSNR optimization formulation with constraint on bit-rate. Then, a solution is provided to the developed formulation, such that bits can be allocated to each coding block for achieving optimal S-PSNR in panoramic video coding. Finally, the experiment results validate the effectiveness of the proposed RC scheme in improving S-PSNR of panoramic video coding.
KW - Panoramic video
KW - Rate control
KW - Virtual reality
UR - https://www.scopus.com/pages/publications/85030230914
U2 - 10.1109/ICME.2017.8019379
DO - 10.1109/ICME.2017.8019379
M3 - 会议稿件
AN - SCOPUS:85030230914
T3 - Proceedings - IEEE International Conference on Multimedia and Expo
SP - 691
EP - 696
BT - 2017 IEEE International Conference on Multimedia and Expo, ICME 2017
PB - IEEE Computer Society
T2 - 2017 IEEE International Conference on Multimedia and Expo, ICME 2017
Y2 - 10 July 2017 through 14 July 2017
ER -