Abstract

A holographic matched filter and an achromatic-fringe interferometer are combined to form an optical correlator that works with nonlaser sources. Pattern-recognition capabilities using band-limited illumination are illustrated in a dollar-bill-recognition experiment.

© 1980 Optical Society of America

Space and wavelength dependence of a dispersion-compensated matched filter

G. M. Morris and Nicholas George
Appl. Opt. 19(22) 3843-3850 (1980)

Frequency-plane filtering with an achromatic optical transform

G. M. Morris and Nicholas George
Opt. Lett. 5(10) 446-448 (1980)

Broadband space-variant Fresnel processor

G. Mínguez-Vega, J. Lancis, E. Tajahuerce, V. Climent, J. Caraquitena, and P. Andrés
Opt. Lett. 27(21) 1926-1928 (2002)

Construction of multicapacity matched filters using birefringent object film

Robert A. Bondurant and Kenneth G. Leib
Appl. Opt. 19(8) 1380-1382 (1980)

Rotational matched spatial filter for biological pattern recognition

Hitoshi Fujii, Silverio P. Almeida, and James E. Dowling
Appl. Opt. 19(7) 1190-1195 (1980)