Abstract

A real-time large-capacity rapid-scanning optical correlator utilizing a rotating grating concept is described. We have shown that the proposed optical scanning correlator (OSC) is capable of processing large-capacity optical memories with rapid spectrum scanning. With the implementation of a closed-circuit TV system, the OSC system can be applied in real-world situations. We have also experimentally tested the overall correlation sensitivity of the OSC system due to spectrum scanning, object orientation, scale changes, and tilting of the rotating grating. Several experimental results obtained with this proposed OSC system are included.

© 1984 Optical Society of America

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