Inherently edge-preserving depth-map coding without explicit edge detection and approximation

Shampa Shahriyar, Manzur Murshed, Mortuza Ali, Manoranjan Paul

    Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

    4 Citations (Scopus)

    Abstract

    In emerging 3D video coding, depth has significant importance in view synthesis, scene analysis, and 3D object reconstruction. Depth images can be characterized by sharp edges and smooth large regions. Most of the existing depth coding techniques use intra-coding mode and try to preserve edges explicitly with approximated edge modelling. However, edges can be implicitly preserved as long as the transformation is avoided. In this paper, we have demonstrated that inherent edge preserving encoding of inter-coded block residuals, uniformly quantized at pixel domain using motion data from associated texture components, is more efficient than explicitly edge preserving intra-coding techniques. Experimental results show that the proposed technique have achieved superior image quality of synthesized views against the new 3D-HEVC standard. Lossless applications of the proposed technique has achieved on average 66% and 23% bit-rate savings against 3D-HEVC with negligible quantization and perceptually unnoticeable view synthesis, respectively.
    Original languageEnglish
    Title of host publication2014 IEEE International Conference on Multimedia and Expo Workshops (ICMEW 2014)
    Subtitle of host publicationChengdu, China, 14-18 July 2014 [Proceedings]
    PublisherIEEE, Institute of Electrical and Electronics Engineers
    Pages369-374
    Number of pages6
    ISBN (Print)9781479947164
    DOIs
    Publication statusPublished - 2014
    EventIEEE International Workshop on Hot Topics in 3D 2014 - Chengdu, China
    Duration: 14 Jul 201414 Jul 2014
    Conference number: 5th
    https://web.archive.org/web/20141107061013/http://hot3d.org:80/
    http://www.ieee-icme.org/icme2014/www.icme2014.org/workshops.html (listing of all the workshops held at ICME 2014)

    Workshop

    WorkshopIEEE International Workshop on Hot Topics in 3D 2014
    Abbreviated titleHot3D 2014
    CountryChina
    CityChengdu
    Period14/07/1414/07/14
    OtherHeld in conjunction with ICME'14
    (14 workshops)
    Internet address

    Keywords

    • Depth-map coding
    • Residual coding
    • Multiview plus depth
    • Pixel-based scalar quantization

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