A novel distortion model for depth coding in 3D-HEVC

Author

Chenyang Li ; Xin Jin ; Qionghai Dai

Author_Institution

Grad. Sch. at Shenzhen, Tsinghua Univ., Shenzhen, China

fYear

2014

fDate

27-30 Oct. 2014

Firstpage

3228

Lastpage

3232

Abstract

In 3D-HEVC, the latest 3D video coding project of MPEG, the coding mode of depth maps is determined by view synthesis optimization (VSO) which integrates view synthesis distortion into rate distortion optimization (RDO) to improve the compression efficiency and synthesis quality simultaneously. However, it introduces a big burden in coding complexity of depth maps. In this paper, a novel distortion model for depth coding in 3D-HEVC is proposed which estimates the distortion of synthesized views using an adaptive model for different pixel intervals. It outperforms existing depth distortion estimation algorithms by 16.6% BD-BR saving in max and 10.2% BD-BR saving on average. Compared with VSO, it reduces encoding complexity of depth maps by 46.2% with the highest efficiency-complexity performance among existing depth distortion estimation algorithms.

Keywords

distortion; optimisation; video coding; 3D video coding; 3D-HEVC; compression efficiency; depth coding; distortion model; rate distortion optimization; synthesis quality; view synthesis distortion; view synthesis optimization; Adaptation models; Complexity theory; Encoding; Estimation; Interpolation; Three-dimensional displays; Video coding; 3D-HEVC; Depth distortion estimation; depth map coding; rate-distortion optimization;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing (ICIP), 2014 IEEE International Conference on

Conference_Location

Paris

Type

conf

DOI

10.1109/ICIP.2014.7025653

Filename

7025653