Direction scalability of adaptive directional wavelet transform: An approach using block-lifting based DCT and SPIHT

Yuichi Tanaka, Madoka Hasegawa, Shigeo Kato, Taizo Suzuki, Masaaki Ikehara

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

    1 Citation (Scopus)

    Abstract

    Adaptive directional wavelet transform is an effective alternative of the traditional 2-D wavelet transform for image coding. It is able to transform an image adaptively along diagonal orientations as well as conventional vertical/horizontal directions. However, it requires to transmit transform direction information to the decoder side. For image coding at very low bitrates, the bit budget of the direction information degrades a reconstructed image quality. In this paper, a method to construct a scalable bitstream for transform directions is presented. We utilize the fact that the matrix yielded by transform direction indices still contains the original image characteristics. The matrix is transformed by a block-lifting based DCT, then encoded by SPIHT to yield a scalable bitstream. Our method is effective for very low bitrate image coding, and is comparable to the non-scalable one for middle-to-high bitrates.

    Original languageEnglish
    Title of host publicationISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems
    Subtitle of host publicationNano-Bio Circuit Fabrics and Systems
    Pages3044-3047
    Number of pages4
    DOIs
    Publication statusPublished - 2010 Aug 31
    Event2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010 - Paris, France
    Duration: 2010 May 302010 Jun 2

    Publication series

    NameISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems

    Other

    Other2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems, ISCAS 2010
    CountryFrance
    CityParis
    Period10/5/3010/6/2

    ASJC Scopus subject areas

    • Hardware and Architecture
    • Electrical and Electronic Engineering

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  • Cite this

    Tanaka, Y., Hasegawa, M., Kato, S., Suzuki, T., & Ikehara, M. (2010). Direction scalability of adaptive directional wavelet transform: An approach using block-lifting based DCT and SPIHT. In ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems (pp. 3044-3047). [5537992] (ISCAS 2010 - 2010 IEEE International Symposium on Circuits and Systems: Nano-Bio Circuit Fabrics and Systems). https://doi.org/10.1109/ISCAS.2010.5537992