Abstract

New experimental results for scale-invariant implementations of the binary phase-only matched filter and the nonlinear joint transform correlator using ferroelectric liquid-crystal spatial light modulators are presented. We provide a comparative study of both architectures for real-time road-sign recognition. Signal-to-peak-noise ratios in excess of 5 dB over a scale range of 1.0 to 2.0 are achieved under realistic conditions of clutter.

© 1995 Optical Society of America

Optical correlator using very-large-scale integrated circuit/ferroelectric-liquid-crystal electrically addressed spatial light modulators

Richard M. Turner, David A. Jared, Gary D. Sharp, and Kristina M. Johnson
Appl. Opt. 32(17) 3094-3101 (1993)

Performance comparison of ferroelectric liquid-crystal-technology-based coherent optical multichannel correlators

G. Keryer, J. L. de Bougrenet de la Tocnaye, and A. Al Falou
Appl. Opt. 36(14) 3043-3055 (1997)

Scale-invariant binary phase-only matched filter using a ferroelectric-liquid-crystal spatial light modulator

T. D. Wilkinson, D. C. O’Brien, and R. J. Mears
Appl. Opt. 33(20) 4452-4453 (1994)

Measurements on ferroelectric liquid-crystal spatial light modulators: contrast ratio and speed

N. Collings, J. Gourlay, D. G. Vass, H. J. White, C. Stace, and G. M. Proudley
Appl. Opt. 34(26) 5928-5931 (1995)

Dynamic holographic interconnects that use ferroelectric liquid-crystal spatial light modulators

D. C. O’Brien, R. J. Mears, T. D. Wilkinson, and W. A. Crossland
Appl. Opt. 33(14) 2795-2803 (1994)