A class of near shift-invariant and orientation-selective transform based on delay-less oversampled even-stacked cosine-modulated filter banks

Seisuke Kyochi, Masaaki Ikehara

    Research output: Contribution to journalArticle

    11 Citations (Scopus)

    Abstract

    The purpose of this study is to show a class of near shiftinvariant and orientation-selective transform based on even-stacked cosinemodulated filter banks (ECFBs) which originally have been proposed by Lin and Vaidyanathan. It is well-known that ECFBs can be designed by the modulation of just one prototype filter and guarantee the linear phase property. We extend this class to delay-less oversampled ECFB and show two additional attractive features; high directional selectivity and near shiftinvariant property. In this paper, these properties are verified by theoretical analysis and demonstrations.

    Original languageEnglish
    Pages (from-to)724-733
    Number of pages10
    JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
    VolumeE93-A
    Issue number4
    DOIs
    Publication statusPublished - 2010 Apr

    Keywords

    • Directionality
    • Even-stacked cosine-modulated filter bank
    • Near shift-invariance
    • Overcomplete transform

    ASJC Scopus subject areas

    • Signal Processing
    • Computer Graphics and Computer-Aided Design
    • Electrical and Electronic Engineering
    • Applied Mathematics

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