Cosine-modulated two-dimensional time-varying filter banks

Satoshi Imata, Masaaki Ikehara, Shin ichi Takahashi

    研究成果: Paper査読

    抄録

    Two-dimensional (2-D) filter banks are widely used for analysis and synthesis systems applied to subband coding of image. Recent years, time-varying filter banks that vary the structure of them appropriately for a local property of signals have been studied to apply to the compression of data of image. In time-varying filter banks, each different part of signals is processed with different filter coefficients or different number of channels (a different sampling matrix). Those signals have to be perfectly reconstructed even across transition of the filter banks. In this paper, we consider time-varying systems of cosine-modulated 2-D filter banks for arbitrary sampling lattices. We show perfect reconstruction (PR) conditions for such time-varying filter banks that vary filter coefficients or a sampling matrix. Some applications are presented to show the effectiveness of this method.

    本文言語English
    ページ828-833
    ページ数6
    出版ステータスPublished - 1996 12 1
    イベントProceedings of the 1996 IEEE Region 10 TENCON - Digital Signal Processing Applications Conference. Part 2 (of 2) - Perth, Aust
    継続期間: 1996 11 261996 11 29

    Other

    OtherProceedings of the 1996 IEEE Region 10 TENCON - Digital Signal Processing Applications Conference. Part 2 (of 2)
    CityPerth, Aust
    Period96/11/2696/11/29

    ASJC Scopus subject areas

    • コンピュータ サイエンスの応用
    • 電子工学および電気工学

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