Improved POCS-based deblocking technique using wavelet transform in block coded image

Goo Rak Kwon, Hyo Kak Kim, Chun Soo Park, Yoon Kim, Sung Jea Ko

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    This paper presents a improved POCS-based deblocking technique, based on the theory of the projection onto convex sets (POCS) to reduce the blocking artifacts in decoded images. We propose a new smoothness constraint set (SCS) and its projection operator in the wavelet transform (WT) domain to remove unnecessary high-frequency components caused by blocking artifacts. In order to eliminate the blocking artifacts component while preserving the original edge component, we also propose a significant coefficient decision method (SCDM)for fast and efficient performance. Experimental results show that the proposed method can not only achieve a significantly enhanced subjective quality but also increase the PSNR improvement in the reconstructed image.

    Original languageEnglish
    Title of host publicationAdvances in Multimedia Information Processing - PCM 2006
    Subtitle of host publication7th Pacific Rim Conference on Multimedia, Proceedings
    PublisherSpringer Verlag
    Pages676-685
    Number of pages10
    ISBN (Print)3540487662, 9783540487661
    DOIs
    Publication statusPublished - 2006
    EventPCM 2006: 7th Pacific Rim Conference on Multimedia - Hangzhou, China
    Duration: 2006 Nov 22006 Nov 4

    Publication series

    NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
    Volume4261 LNCS
    ISSN (Print)0302-9743
    ISSN (Electronic)1611-3349

    Other

    OtherPCM 2006: 7th Pacific Rim Conference on Multimedia
    Country/TerritoryChina
    CityHangzhou
    Period06/11/206/11/4

    ASJC Scopus subject areas

    • Theoretical Computer Science
    • General Computer Science

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