Opto-electronic image processor

Details Opto-electronic image processor Opto-electronic image processor

1982-10-15

1985-12-17

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

250213A, 382 32, 382 65, G06K 900

Patent

active

045596433

ABSTRACT:
The invention relates to a device for processing optical information of light intensity and/or light polarization and/or phase position and/or spectral composition varying in one, two or three dimensions and possibly varying in time. The processing of the information is adapted to be carried out by electro-optical modulators, for example liquid crystals, and photo-detectors, for example photo-conductors, are electrically connected together with other components, such as resistors and optical filters, so as to obtain circuits with electro-optical feedback. The invention is characterized in that said circuits with electro-optical feedback are arranged to sense the absolute light intensity, etc., at spatially different points of the optical information.

REFERENCES:
patent: 3093477 (1963-06-01), Triebwasser
patent: 3248552 (1966-04-01), Bryan
patent: 3453595 (1969-07-01), Barrekette et al.
patent: 3643066 (1972-02-01), Coliz et al.
patent: 4270046 (1981-05-01), Werking
patent: 4272157 (1981-06-01), Collins, Jr. et al.
Applied Physics Letters 32, (Mar. 1978), 5, pp. 320-321, Garmire et al, "Incoherent Mirrorless Bistable Optical Devices".

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