ROTATIONAL INVARIANT PATTERN-RECOGNITION USING A COMPOSITE CIRCULAR HARMONIC AND 2D ISOTROPIC MEXICAN-HAT WAVELET FILTER

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28248

Title:	ROTATIONAL INVARIANT PATTERN-RECOGNITION USING A COMPOSITE CIRCULAR HARMONIC AND 2D ISOTROPIC MEXICAN-HAT WAVELET FILTER
Authors:	CHENG,YS;LIANG,TC
Contributors:	光電科學研究所
Keywords:	MATCHED-FILTERS;PHASE;EXPANSION;TRANSFORM
Date:	1994
Issue Date:	2010-06-29 19:44:51 (UTC+8)
Publisher:	中央大學
Abstract:	An improved shift- and rotational-invariant filter using wavelet transform and circular harmonic filtering at the same time is proposed. Computer simulation has shown that the filter is better than phase-only circular harmonic filter in peak sharpness, discriminating ability, SNR and tolerance of position error of the filter. Furthermore, this filter possesses high diffraction efficiency.
Relation:	OPTICS COMMUNICATIONS
Appears in Collections:	[Graduate Institute of Optics and Photonics] journal & Dissertation

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