SCALE-INVARIANT OPTICAL CORRELATORS USING FERROELECTRIC LIQUID-CRYSTAL SPATIAL LIGHT MODULATORS

Authors
WILKINSON TD PETILLOT Y MEARS RJ DELATOCNAYE JLD
Citation
Td. Wilkinson et al., SCALE-INVARIANT OPTICAL CORRELATORS USING FERROELECTRIC LIQUID-CRYSTAL SPATIAL LIGHT MODULATORS, Applied optics, 34(11), 1995, pp. 1885-1890
Citations number
17
Categorie Soggetti
Optics
Journal title
Applied optics → ACNP
ISSN journal
00036935
Volume
34
Issue
11
Year of publication
1995
Pages
1885 - 1890
Database
ISI
SICI code
0003-6935(1995)34:11<1885:SOCUFL>2.0.ZU;2-V
Abstract
New experimental results for scale-invariant implementations of the bi nary phase-only matched filter and the nonlinear joint transform corre lator using ferroelectric liquid-crystal spatial light modulators are presented. We provide a comparative study of both architectures for re al-time road-sign recognition. Signal-to-peak-noise ratios in excess o f 5 dB over a scale range of 1.0 to 2.0 are achieved under realistic c onditions of clutter.