Pattern recognition apparatus

Details Pattern recognition apparatus Pattern recognition apparatus

1990-06-06

1992-06-09

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 33, 382 34, G06K 968

Patent

active

051214440

ABSTRACT:
A pattern recognition apparatus is disclosed that is capable of high-speed, automatic recognition of input image patterns with a high degree of accuracy and which also has a broad range of operational tolerance to shifts in the position of input image patterns. The pixel data of an input image are compared by separate circuits with pixel data of reference image patterns. Other circuits use these comparisons to select that one of the reference patterns to which the input image corresponds.

REFERENCES:
patent: 3601802 (1971-08-01), Nakagome
patent: 4205302 (1980-05-01), Godo
patent: 4498189 (1985-02-01), Mori
patent: 4543532 (1985-09-01), Kasser
patent: 4783829 (1988-11-01), Miyakawa et al.
patent: 4905162 (1990-02-01), Hartzband et al.
patent: 4949396 (1990-08-01), Chung
"Considerations in the Design of Character Pattern Recognition Devices" by E. C. Greanias and Y. M. Hill, Part 4, vol. 5, p. 119 of 1957 Ire National Convention Record.

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