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Proceedings Paper

Elliptical coordinate transformed phase-only filter for shift and scale invariant pattern recognition
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Paper Abstract

In a computer experiment we prove shift and scale invariant pattern recognition abilities of an elliptic coordinate transformed phase-only filter. The filter is built in the following way: from the classical matched filter we take the phase component only and then the elliptic coordinate transformation is made. We analyze performance of the filter for different semiaxes ratios and on-axis stops of several diameters. Discrimination ability of the filter is calculated. The filter allows good recognition of objects with change of scale by a factor of 1.5.

Paper Details

Date Published: 1 October 1991
PDF: 8 pages
Proc. SPIE 1574, Intl Colloquium on Diffractive Optical Elements, (1 October 1991); doi: 10.1117/12.50112
Show Author Affiliations
Javier Garcia, Asociacion de Investigacion de Optica (Spain)
Carlos Ferreira, Univ. de Valencia (Spain)
Tomasz Szoplik, Univ. of Warsaw (Poland)

Published in SPIE Proceedings Vol. 1574:
Intl Colloquium on Diffractive Optical Elements

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