Design of generalized filter banks with unequal-length and its application of image coding

Atsuhiko Saito, Toshichika Urushibara, Masaaki Ikehara

    研究成果: Article査読

    1 被引用数 (Scopus)

    抄録

    In this paper, we present a design and implementation of the M-channel linear-phase filter banks with unequal-length and same center of symmetry. The filter banks are separated into paraunitary and biorthogonal case. We discuss both cases. A novel filter bank can be regarded as a special class of generalized lapped transform with arbitrary number of channels M. In image coding applications, long basis functions should be used to avoid the blocking artifacts in low-frequency bands, while short basis functions should be used to reduce the ringing artifacts in high-frequency bands. Having the same center of symmetry is suitable for progressive image coder [SPIHT]. Filter banks with such characteristics can be achieved structurally by taking acount of the lattice structure. Finally, several design and image coding examples are shown.

    本文言語English
    ページ(範囲)1756-1764
    ページ数9
    ジャーナルIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
    E87-A
    7
    出版ステータスPublished - 2004 7

    ASJC Scopus subject areas

    • 信号処理
    • コンピュータ グラフィックスおよびコンピュータ支援設計
    • 電子工学および電気工学
    • 応用数学

    フィンガープリント

    「Design of generalized filter banks with unequal-length and its application of image coding」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

    引用スタイル