Collision avoidance alarm system

Details Collision avoidance alarm system Collision avoidance alarm system

1987-10-01

1989-10-03

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358105, 358107, 358125, H06N 718

Patent

active

048720518

ABSTRACT:
The following invention is a passive collision avoidance alarm system. An optical sensor (which may optionally be visable, infrared or ultraviolet) is disposed to provide a continuous raster scan of the scene within a wide angle of the direction of travel of the vehicle. This sensor output is converted into digital data and stored. A computer system compares consecutive scenes to detect identifiable objects. For such identifiable objects the computer calculates the centroid of the object and its angle, and a measure of the size or extent of the object. Detection of an object having a constant angle and a increasing measure of extent causes an alarm to be triggered.

REFERENCES:
patent: 3636330 (1972-01-01), Holeman
patent: 4257703 (1981-03-01), Goodrich
patent: 4288050 (1981-09-01), Gauggel
patent: 4344146 (1982-08-01), Davis
patent: 4512000 (1985-04-01), Masuko
Tsukiyama et al, Pattern Recognition, vol. 18, Nos. 3/4, pp. 207-213 (1985) "Detection of the Movements of Persons from a Sparse Sequence of TV Images".

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