Presentation 2008-06-27
Novel Characteristics of Even-Stacked Cosine-Modulated Filter Banks : Alternative M-band Dual-Tree Wavelet Transform, Directionality, Shift-Invariance
Seisuke KYOCHI, Masaaki IKEHARA,
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Abstract(in English) In this paper, we show novel characteristics of even-stacked cosine-modulated filter banks (ECFBs) which have been proposed by Lin and Vaidyanathan. It is well-known that ECFBs can save their design cost and guarantee the linear phase property. In addition to these attractive features, we add three unknown features. First, ECFBs can be regarded as M-band dual-tree wavelet transform (MDTWT) which has proposed recently. Second, ECFBs have rich directional selectivity. Third, ECFBs with oversampling ratio of 2 provide shift-invariant MDTWTs which assure the shift-invariance at any decomposition levels. Therefore, ECFBs can provide an efficient design method for the MDTWT with linear phase, rich directional selectivity, and shift-invariance. In this paper, we verify these facts by theoretical analysis and simulations.
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Keyword(in English) M-band dual-tree wavelet transform / even-stacked cosine-modulated filter bank / directionality / shift-invariant
Paper # CAS2008-32,VLD2008-45,SIP2008-66
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Committee VLD
Conference Date 2008/6/20(1days)
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Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Novel Characteristics of Even-Stacked Cosine-Modulated Filter Banks : Alternative M-band Dual-Tree Wavelet Transform, Directionality, Shift-Invariance
Sub Title (in English)
Keyword(1) M-band dual-tree wavelet transform
Keyword(2) even-stacked cosine-modulated filter bank
Keyword(3) directionality
Keyword(4) shift-invariant
1st Author's Name Seisuke KYOCHI
1st Author's Affiliation Department of Electrical and Electronics Engineering, Keio University()
2nd Author's Name Masaaki IKEHARA
2nd Author's Affiliation Department of Electrical and Electronics Engineering, Keio University
Date 2008-06-27
Paper # CAS2008-32,VLD2008-45,SIP2008-66
Volume (vol) vol.108
Number (no) 107
Page pp.pp.-
#Pages 6
Date of Issue