Blocking artifacts reduction in block-based dual-tree complex wavelet transform

Takaaki Ishikawa, Hiroshi Watanabe, Yukihiro Bandoh, Seishi Takamura, Hirohisa Jozawa

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

    1 Citation (Scopus)

    Abstract

    We propose a new method to reduce blocking artifacts in an encoded image by block-based Dual-Tree Complex Wavelet. In this paper, we describe a cause of blocking artifacts of the block-based approach and focus on a method for finding sparse representations from redundant complex coefficients. The proposed method offers minimal transform operation performing on the same resolution for an input image. Experimental results show that the proposed method reduces blocking artifacts that are observed along block boundaries and thus improves the visual quality.

    Original languageEnglish
    Title of host publicationISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings
    Pages260-263
    Number of pages4
    DOIs
    Publication statusPublished - 2009
    Event2009 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2009 - Kanazawa
    Duration: 2009 Dec 72009 Dec 9

    Other

    Other2009 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2009
    CityKanazawa
    Period09/12/709/12/9

    Fingerprint

    Wavelet transforms
    artifact
    cause

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Signal Processing
    • Electrical and Electronic Engineering
    • Communication

    Cite this

    Ishikawa, T., Watanabe, H., Bandoh, Y., Takamura, S., & Jozawa, H. (2009). Blocking artifacts reduction in block-based dual-tree complex wavelet transform. In ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings (pp. 260-263). [5383851] https://doi.org/10.1109/ISPACS.2009.5383851

    Blocking artifacts reduction in block-based dual-tree complex wavelet transform. / Ishikawa, Takaaki; Watanabe, Hiroshi; Bandoh, Yukihiro; Takamura, Seishi; Jozawa, Hirohisa.

    ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings. 2009. p. 260-263 5383851.

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

    Ishikawa, T, Watanabe, H, Bandoh, Y, Takamura, S & Jozawa, H 2009, Blocking artifacts reduction in block-based dual-tree complex wavelet transform. in ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings., 5383851, pp. 260-263, 2009 International Symposium on Intelligent Signal Processing and Communication Systems, ISPACS 2009, Kanazawa, 09/12/7. https://doi.org/10.1109/ISPACS.2009.5383851
    Ishikawa T, Watanabe H, Bandoh Y, Takamura S, Jozawa H. Blocking artifacts reduction in block-based dual-tree complex wavelet transform. In ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings. 2009. p. 260-263. 5383851 https://doi.org/10.1109/ISPACS.2009.5383851
    Ishikawa, Takaaki ; Watanabe, Hiroshi ; Bandoh, Yukihiro ; Takamura, Seishi ; Jozawa, Hirohisa. / Blocking artifacts reduction in block-based dual-tree complex wavelet transform. ISPACS 2009 - 2009 International Symposium on Intelligent Signal Processing and Communication Systems, Proceedings. 2009. pp. 260-263
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