PATTERN-DISCRIMINATION USING WAVELET FILTERS IN A PHOTOREFRACTIVE JOINT-TRANSFORM CORRELATOR

Authors
TRIPATHI R JOSEPH J SINGH K
Citation
R. Tripathi et al., PATTERN-DISCRIMINATION USING WAVELET FILTERS IN A PHOTOREFRACTIVE JOINT-TRANSFORM CORRELATOR, Optics communications, 143(1-3), 1997, pp. 5-10
Citations number
16
Categorie Soggetti
Optics
Journal title
Optics communications → ACNP
ISSN journal
00304018
Volume
143
Issue
1-3
Year of publication
1997
Pages
5 - 10
Database
ISI
SICI code
0030-4018(1997)143:1-3<5:PUWFIA>2.0.ZU;2-H
Abstract
We propose and demonstrate the use of wavelet filters for pattern disc rimination in a photorefractive (PR) joint-transform correlator. A PR BaTiO3 crystal has been used to record the joint power spectrum in rea l-time. Wavelet filters are generated in the form of a filter bank and are projected serially onto the crystal, using a liquid crystal spati al light modulator (SLM). Choice of a suitable filter offers a high de gree of pattern discrimination. (C) 1997 Elsevier Science B.V.