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

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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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