A novel depth motion vector coding exploiting spatial and inter-component clustering tendency

Shampa Shahriyar, Manzur Murshed, Mortuza Ali, Manoranjan Paul

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

    3 Citations (Scopus)


    Motion vectors of depth-maps in multiview and free-viewpoint videos exhibit strong spatial as well as inter-component clustering tendency. This paper presents a novel coding technique that first compresses the multidimensional bitmaps of macroblock mode and then encodes only the non-zero components of motion vectors. The bitmaps are partitioned into disjoint cuboids using binary tree based decomposition so that the 0's and 1's are either highly polarized or further sub-partitioning is unlikely to achieve any compression. Each cuboid is entropy-coded as a unit using binary arithmetic coding. This technique is capable of exploiting the spatial and inter-component correlations efficiently without the restriction of scanning the bitmap in any specific linear order as needed by run-length coding. As encoding of non-zero component values no longer requires denoting the zero value, further compression efficiency is achieved. Experimental results on standard multiview test video sequences have comprehensively demonstrated the superiority of the proposed technique, achieving overall coding gain against the state-of-the-art in the range [22%, 54%] and on average 38%.
    Original languageEnglish
    Title of host publication2015 Visual Communications and Image Processing (VCIP 2015)
    Subtitle of host publicationSingapore, 13 - 16 December 2015 [Proceedings]
    Place of PublicationPiscataway NJ USA
    PublisherIEEE, Institute of Electrical and Electronics Engineers
    Number of pages4
    ISBN (Electronic)9781467373142
    ISBN (Print)9781467373159
    Publication statusPublished - 2015
    EventIEEE Visual Communications and Image Processing 2015 - Nanyang Technological University, Singapore, Singapore
    Duration: 13 Dec 201516 Dec 2015


    ConferenceIEEE Visual Communications and Image Processing 2015
    Abbreviated titleVCIP 2015
    Internet address

    Cite this