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

Javier Garcia; Carlos Ferreira; Tomasz Szoplik

doi:10.1117/12.50112

1 October 1991 Elliptical coordinate transformed phase-only filter for shift and scale invariant pattern recognition

Javier Garcia, Carlos Ferreira, Tomasz Szoplik

Proceedings Volume 1574, Intl Colloquium on Diffractive Optical Elements; (1991) https://doi.org/10.1117/12.50112
Event: International Colloquium on Diffractive Optical Elements, 1991, Szklarska Poreba, Poland

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.

Citation Download Citation

Javier Garcia, Carlos Ferreira, and Tomasz Szoplik "Elliptical coordinate transformed phase-only filter for shift and scale invariant pattern recognition", Proc. SPIE 1574, Intl Colloquium on Diffractive Optical Elements, (1 October 1991); https://doi.org/10.1117/12.50112

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available