Efficient Coding of Depth Map by Exploiting Temporal Correlation

Shampa Shahriyar, Manzur Murshed, Mortuza Ali, Manoranjan Paul

Research output: Book chapter/Published conference paperConference paper

5 Citations (Scopus)
4 Downloads (Pure)

Abstract

With the growing demands for 3D and multi-view video content, efficient depth data coding becomes a vital issue in image and video coding area. In this paper, we propose a simple depth coding scheme using multiple prediction modes exploiting temporal correlation of depth map. Current depth coding techniques mostly depend on intra-coding mode that cannot get the advantage of temporal redundancy in the depth maps and higher spatial redundancy in inter-predicted depth residuals. Depth maps are characterized by smooth regions with sharp edges that play an important role in the view synthesis process. As depth maps are more sensitive to coding errors, use of transformation or approximation of edges by explicit edge modelling has impact on view synthesis quality. Moreover, lossy compression of depth map brings additional geometrical distortion to synthetic view. In this paper, we have demonstrated that encoding inter-coded depth block residuals with quantization at pixel domain is more efficient than the intra-coding techniques relying on explicit edge preservation. On standard 3D video sequences, the proposed depth coding has achieved superior image quality of synthesized views against the new 3D-HEVC standard for depth map bit-rate 0.25 bpp or higher.
Original languageEnglish
Title of host publicationProceedings of the 2014 International Conference on Digital Image Computing: Techniques and Applications
Place of PublicationUnited States
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages1-8
Number of pages8
ISBN (Electronic)9781479954094
DOIs
Publication statusPublished - 2014
Event2014 International Conference on Digital Image Computing: Techniques and Applications (DICTA) - Novotel Wollongong Northbeach Hotel, Wollongong, Australia
Duration: 25 Nov 201427 Nov 2014
https://ssl.informatics.uow.edu.au/dicta2014/

Conference

Conference2014 International Conference on Digital Image Computing: Techniques and Applications (DICTA)
CountryAustralia
CityWollongong
Period25/11/1427/11/14
OtherThe International Conference on Digital Image Computing: Techniques and Applications (DICTA) is an International Conference on computer vision, image processing, pattern recognition, and related areas. DICTA was established as a biennial conference in 1991 and became an annual event in 2007. It is the premier conference of the Australian Pattern Recognition Society (APRS).
Internet address

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