Abstract

Associative memory is an important criterion in the performance of a pattern-recognition system based on optical correlation. Through computer simulation we compare the performance of the matched filter, the phase-only filter, and the binary phase-only filter by using such measures as signal-tonoise ratio and peak-to-secondary ratio. Performance in a zero-noise background and in a cluttered noise background is included. The performance of the unit-modulus filters is generally superior.

© 1990 Optical Society of America