Method and apparatus for processing optical tracking signals

Details Method and apparatus for processing optical tracking signals Method and apparatus for processing optical tracking signals

1983-03-08

1985-09-03

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358107, 358282, H04N 718

Patent

active

045395900

ABSTRACT:
In an optical tracking system utilizing a TV camera, a method and apparatus for effectively removing the background of the scene and passing only target information to the tracking system. The analog video signal from the camera is converted to a 6-bit byte digital bit stream and top and bottom scanning lines representative of the background are stored. Scanning lines containing target data are compared to the stored lines and are converted to a serial digital bit stream having a ZERO base line representative of the background and variable width ONEs representative of the target. The centroid of the target is calculated and utilized to generate a tracking error between the centroid and the camera boresight.

REFERENCES:
patent: 3444380 (1969-05-01), Webb
patent: 3586770 (1971-06-01), Bonebreak
patent: 3947628 (1976-03-01), Alien
patent: 4133004 (1979-01-01), Fitts
patent: 4314276 (1982-02-01), Woolfson
patent: 4345314 (1982-08-01), Melamud
patent: 4385318 (1983-05-01), Miller

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