Video image position determination

Details Video image position determination Video image position determination

1990-04-02

1991-10-08

Peng, John K.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358105, 382 18, 356152, H04N 718

Patent

active

050559265

ABSTRACT:
An optical beam position controller in which a video camera captures an image of the beam in its video frames, and conveys those images to a processing board which calculates the centroid coordinates for the image. The image coordinates are used by motor controllers and stepper motors to position the beam in a predetermined alignment. In one embodiment, system noise, used in conjunction with Bernoulli trials, yields higher resolution centroid coordinates.

REFERENCES:
patent: 3541246 (1970-11-01), Goldfischer
patent: 3953670 (1976-04-01), Prince
patent: 4004083 (1977-01-01), Norem
patent: 4710957 (1987-12-01), Bocci et al.
patent: 4958224 (1990-09-01), Lepore et al.
F. Anderson, W. Christiansen, B. Kortegaard, "Real Time, Video Image Centroid Tracker," Apr. 16-20, 1990.
B. L. Kortegaard, "PAC-MAN, a Precision Alignment Control System for Multiple Laser Beams Self-Adaptive Through the Use of Noise," Los Alamos National Laboratory, date unknown.
B. L. Kortegaard, "Superfine Laser Position Control Using Statistically Enhanced Resolution in Real Time," Los Alamos National Laboratory, SPIE--Los Angeles Technical Symposium, Jan. 23-25, 1985.

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