## An Optical Thresholding Perceptron

An implementation of an optical perceptron with a soft optical threshold trained with an adapted BP algorithm is described as a precursor to an optical multilayer perceptron (MLP). It has 64 inputs and ten outputs. The soft threshold is implemented by a liquid crystal light valve. Experimental results on perceptron recall are also reported. The effect of a modified grey-scale to weight mapping for weight levels implemented by LCTVs is evaluated based on the results of handwritten digit recognition.

Year:
1997
Publisher:
IDIAP
Keywords:
Note:
Published in Proceedings of the Workshop on Optics and Computer Science''
Laboratories: