Optical stereo video signal processor

Details Optical stereo video signal processor Optical stereo video signal processor

1983-03-09

1985-12-03

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

350335, 356 45, 356345, 358 88, 358105, 358125, 364822, G06K 900, H04N 718

Patent

active

045569860

ABSTRACT:
An optical video signal processor which produces a two-dimensional cross-correlation in real time of images received by a stereo camera system. The optical image of each camera (12, 14) is projected on respective liquid crystal light valves (28, 48). The images on the liquid crystal valves (28, 48) modulate light produced by an extended light source (32). This modulated light output becomes the two-dimensional cross-correlation when focused onto a video detector (42) and is a function of the range of a target (1) with respect to the stereo camera (10). Alternate embodiments utilize the two-dimensional cross-correlation to determine target movement and target identification.

REFERENCES:
patent: 3961851 (1976-06-01), Gerharz
patent: 4357676 (1982-11-01), Brown
patent: 4409661 (1983-10-01), Romanski
patent: 4462046 (1984-07-01), Spight

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