Image recognition device

Details Image recognition device Image recognition device

1988-08-03

1991-11-19

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 41, G06K 900

Patent

active

050671618

ABSTRACT:
A visual recognition device receives video signals representing an object to be recognized from a video camera, converts the video signals to a two-valued input pattern, and compares the input pattern with a standard pattern to recognize the object. The recognition device includes an auxiliary computing unit which carries out a predetermined auxiliary computation during a horizontal scan period of the video camera, in accordance with the state of the input pattern; a main computation unit for carrying out, during a vertical return scan blanking period of the video camera, a main computation based on computation results of the auxiliary computation unit; and a recognition unit for recognizing the input pattern with respect to the standard pattern based on computation results of the main computation unit with respect to the patterns.

REFERENCES:
patent: 3217295 (1965-11-01), Barr
patent: 3541246 (1970-11-01), Goldfischer
patent: 3614736 (1971-10-01), McLaughlin
patent: 4060830 (1977-11-01), Woolfson
patent: 4365304 (1982-12-01), Ruhman
patent: 4398256 (1983-08-01), Nussmeier
patent: 4486775 (1984-12-01), Catlow
patent: 4511920 (1985-04-01), Iijima
patent: 4550432 (1985-10-01), Andersson

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