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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

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Summary :

The purpose of this study is to show a class of near shift-invariant and orientation-selective transform based on even-stacked cosine-modulated 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 shift-invariant property. In this paper, these properties are verified by theoretical analysis and demonstrations.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E93-A No.4 pp.724-733
Publication Date
2010/04/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E93.A.724
Type of Manuscript
PAPER
Category
Digital Signal Processing

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