Optical demonstration of shift-, rotation- and limited size-invariant pattern recognition using a circular harmonic-synthetic discrimination function filter

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/28218

Title:	Optical demonstration of shift-, rotation- and limited size-invariant pattern recognition using a circular harmonic-synthetic discrimination function filter
Authors:	Yau,HF;Yang,YO;Chen,PW
Contributors:	光電科學研究所
Keywords:	EXPANSION
Date:	1996
Issue Date:	2010-06-29 19:44:11 (UTC+8)
Publisher:	中央大學
Abstract:	Optical means of performing pattern recognition possessing shift-, rotation- and limited size-invariance is demonstrated. The experimental set-up is a standard Fourier transform correlator with a binary circular harmonic (CGH) filter. The filtering function of the filter is obtained by the synthetic discriminant functions (SDF) method. In the process of synthesizing the filtering function, circular harmonic functions are chosen as the basic functions. Both optical results and computer simulation results demonstrate that the filter is able to recognize the target in every rotational orientation and in the relative size range of 1-1.82.
Relation:	OPTICAL AND QUANTUM ELECTRONICS
Appears in Collections:	[Graduate Institute of Optics and Photonics] journal & Dissertation

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