Pattern recognition processing system

Details Pattern recognition processing system Pattern recognition processing system

1977-03-22

1978-08-08

Boudreau, Leo H.

Communications: electrical

Digital comparator systems

G06K 912

Patent

active

041059980

ABSTRACT:
A pattern recognition processing system in which variations in a character, pattern or the like, especially in a handwritten one, are suppressed to extract its invariable characteristics, ensuring accurate recognition of the character, pattern or the like. The pattern to be recognized is divided into circumscribed quadrangular areas and scanned in horizontal and vertical directions to extract reflection segments between the vertical frames of the circumscribed quadrangular areas and particular segments between adjacent ones of pattern strokes. Further, endpoints of these reflection and particular segments are checked in directions across the scanning directions to extract those endpoints which are not blocked by the pattern strokes, and the corresponding positions of the co-ordinates of these endpoints on a figure frame in the directions across the scanning directions are encoded to extract characteristics of contours of the pattern to be recognized.

REFERENCES:
patent: 3786416 (1974-01-01), Bhimani
patent: 3860909 (1975-01-01), Demonte
patent: 3975710 (1976-08-01), Watanabe et al.
patent: 3999161 (1976-12-01), Van Bilzem et al.

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