Edge-aware wedgelet estimation for depth maps compression

ELCVIA Electronic Letters on Computer Vision and Image Analysis

Faouzi Ghorbel¹  Dorsaf Sebai¹  Faten Chaieb¹ 

关键词: depth maps;    3D-HEVC;    wedge lets;    subdivision line estimation;    exhaustive search;    edge detection;    synthesized views;   

DOI  :  

学科分类：计算机科学（综合）

来源: ELCVIA

【 摘 要 】

In recent years, Multi-view Video plus Depth (MVD) compression has received much attention thanks to its relevance to free viewpoint applications needs. An efficient compression, that causes the least distortion without excessive rate and complexity increase, becomes a must particularly for depth maps.These latter can be compressed efficiently by the 3D extension of High Efficiency Video Coding (3D-HEVC), which has explored wedgelets. Such functions lead to significant Rate-Distortion tradeoffs. However, they require a very large computational complexity involved by the exhaustive search used for the estimation of the wedgelet subdivision line. In this paper, we propose a rapid localization of this latter using an edge detection approach. The experimental results show that the proposed approach allows an important gain in terms of encoding delay, while providing better depth maps and synthesized views quality compared to the exhaustive search approach.

【 授权许可】

Unknown