Optical information processor

Details Optical information processor Optical information processor

1993-01-28

1994-11-08

Mancuso, Joseph

Image analysis

Histogram processing

For setting a threshold

359561, 382 42, G06K 974

Patent

active

053634551

ABSTRACT:
A visual recognition apparatus for use in, for example, a robot requires an optical information processor for performing image processing or image recognition. The optical information processor includes a first spatial light modulator for displaying an input image, a first lens having a front focal plane on which the first spatial light modulator is positioned, a second spatial light modulator for displaying at least one optical filter, a second lens having a front focal plane on which the second spatial light modulator is positioned, and a third lens having a front focal plane on which a rear focal plane of the second lens lies. The optical information processor also includes a beam splitter for combining together light transmitted through the first lens with light transmitted through the third lens, and a fourth lens having a front focal plane on which both a rear focal plane of the first lens and a rear focal plane of the third lens generally lie.

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Upatnieks, "Portable real-time coherent optical correlator", Applied Optics, vol. 22, No. 18, Jul. 1983, pp. 2798-2803.

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