PROJECTION-INVARIANT PATTERN-RECOGNITION WITH A PHASE-ONLY LOGARITHMIC-HARMONIC-DERIVED FILTER

Authors
MOYA A MENDLOVIC D GARCIA J FERREIRA C
Citation
A. Moya et al., PROJECTION-INVARIANT PATTERN-RECOGNITION WITH A PHASE-ONLY LOGARITHMIC-HARMONIC-DERIVED FILTER, Applied optics, 35(20), 1996, pp. 3862-3867
Citations number
12
Categorie Soggetti
Optics
Journal title
Applied optics → ACNP
ISSN journal
00036935
Volume
35
Issue
20
Year of publication
1996
Pages
3862 - 3867
Database
ISI
SICI code
0003-6935(1996)35:20<3862:PPWAPL>2.0.ZU;2-P
Abstract
A phase-only filter based on logarithmic harmonics for projection-inva riant pattern recognition is presented. This logarithmic-harmonic-deri ved filter is directly calculated in the Fourier plane. With respect t o normal logarithmic-harmonic filters it provides a smaller variation of the correlation intensity with the projection factor of the target. Computer and optical experiments are presented. (C) 1996 Optical Soci ety of America