Abstract

Pattern recognition via optical correlation generally requires an incoherent-to-coherent input image converter and benefits from edge enhancement of the input image. We have created a photoaddressed nematic liquid crystal differentiating spatial light modulator that fulfills both these functions. Developments in photoaddressing are discussed, and experimental results on edge enhancement are presented.

© 1989 Optical Society of America

Photoaddressed liquid crystal spatial light modulators

David Armitage, J. I. Thackara, and W. D. Eades
Appl. Opt. 28(22) 4763-4771 (1989)

Photoaddressed spatial light modulator using transmissive and highly photosensitive amorphous-silicon carbide film

Koji Akiyama, Akio Takimoto, and Hisahito Ogawa
Appl. Opt. 32(32) 6493-6500 (1993)

Evolutionary development of advanced liquid crystal spatial light modulators

N. Collings, W. A. Crossland, P. J. Ayliffe, D. G. Vass, and I. Underwood
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Motivations for using ferroelectric liquid crystal spatial light modulators in neurocomputing

Kristina M. Johnson and Garret Moddel
Appl. Opt. 28(22) 4888-4899 (1989)

Liquid crystal television spatial light modulators

Hua-Kuang Liu and Tien-Hsin Chao
Appl. Opt. 28(22) 4772-4780 (1989)