Abstract
A threshold is added to recognize an input pattern that has too few similarities to be one of the memory patterns. A real-time pattern recognition system based on the improved model is given. The unipolar optical pattern recognition system has all the characteristics of a fully bipolar winner-take-all model and has illumination invariance. A liquid-crystal spatial light modulator is used as a real-time input device, and a mask and a lens array perform the threshold and weighted sums of the input pattern. Some experimental results are also shown.
© 1994 Optical Society of America
Full Article | PDF ArticleMore Like This
Shuqun Zhang and Caisheng Chen
Opt. Lett. 19(14) 1067-1069 (1994)
Alain Bergeron, Henri H. Arsenault, Erik Eustache, and Denis Gingras
Appl. Opt. 33(8) 1463-1468 (1994)
Timothy M. Slagle and Kelvin Wagner
Opt. Lett. 17(16) 1164-1166 (1992)