TY - GEN
T1 - Low complexity hybrid view synthesis optimization for 3D-HEVC
AU - Tan, Songchao
AU - Ma, Siwei
AU - Wang, Shiqi
AU - Wang, Shanshe
AU - Gao, Wen
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/7/2
Y1 - 2017/7/2
N2 - In this paper, we propose a low complexity Hybrid View Synthesis Optimization (HVSO) scheme for 3D extension of high efficiency video coding (3D-HEVC). In particular, based on the analyses regarding the impact of depth map compression on the quality of synthesized view rendering, we locally classify the coding tree units (CTUs) of depth map into two categories, including synthesized view distortion change (SVDC) based and view synthesis distortion estimation (VSDE) based CTUs. This allows us to dynamically distinguish the rate-distortion optimization process of these CTUs and obtain the synthesized view distortion of the VSDE based ones in a high efficiency way. More specifically, a new interpolation-based distortion estimation algorithm dedicated for VSDE based CTUs is proposed such that the actual view rendering process can be successfully avoided. In this manner, a good trade-off between the rate-distortion performance and computational complexity in depth map compression is achieved. Experimental results show that with our proposed HVSO method, 75% of the computational complexity on average can be saved for the view synthesis optimization process with only 1.6% BD-rate loss compared with the state-of-The-Art scheme in the 3D-HEVC platform.
AB - In this paper, we propose a low complexity Hybrid View Synthesis Optimization (HVSO) scheme for 3D extension of high efficiency video coding (3D-HEVC). In particular, based on the analyses regarding the impact of depth map compression on the quality of synthesized view rendering, we locally classify the coding tree units (CTUs) of depth map into two categories, including synthesized view distortion change (SVDC) based and view synthesis distortion estimation (VSDE) based CTUs. This allows us to dynamically distinguish the rate-distortion optimization process of these CTUs and obtain the synthesized view distortion of the VSDE based ones in a high efficiency way. More specifically, a new interpolation-based distortion estimation algorithm dedicated for VSDE based CTUs is proposed such that the actual view rendering process can be successfully avoided. In this manner, a good trade-off between the rate-distortion performance and computational complexity in depth map compression is achieved. Experimental results show that with our proposed HVSO method, 75% of the computational complexity on average can be saved for the view synthesis optimization process with only 1.6% BD-rate loss compared with the state-of-The-Art scheme in the 3D-HEVC platform.
KW - 3D extension
KW - Depth map
KW - High efficiency video coding
KW - View synthesis optimization
UR - https://www.scopus.com/pages/publications/85067023107
U2 - 10.1109/ICVRV.2017.00045
DO - 10.1109/ICVRV.2017.00045
M3 - 会议稿件
AN - SCOPUS:85067023107
T3 - Proceedings - 2017 International Conference on Virtual Reality and Visualization, ICVRV 2017
SP - 186
EP - 190
BT - Proceedings - 2017 International Conference on Virtual Reality and Visualization, ICVRV 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 7th International Conference on Virtual Reality and Visualization, ICVRV 2017
Y2 - 21 October 2017 through 22 October 2017
ER -