Alphanumeric character identification

Details Alphanumeric character identification Alphanumeric character identification

1977-11-02

1979-07-31

Thesz, Joseph M.

Communications: electrical

Digital comparator systems

3401463AC, G06K 900

Patent

active

041632133

ABSTRACT:
The method and apparatus disclosed involve the scanning of a representation of a character by means of at least three frame scans based on respectively different directions, the frame scans developing quasitopological codes (QTC) indicative of character STARTS, OPENINGS, CLOSINGS and FINISHES. The QTC relating to convexity-shapes and concavity-shapes of different segments of the character are then automatically stored in respective groups of storage locations in a store, such that, at the end of the process, the groups storing QTC are functionally arranged approximately in the shape of the character so that the character is at least partially recognizable thereby. Also disclosed is method and apparatus in which at least partial recognition of the character takes place by comparing the distances between selected pairs of QTC. In addition, the recognition process may involve the actual comparison of the list of QTC for the character with a set of lists representing predetermined characters.

REFERENCES:
patent: 3178688 (1965-04-01), Hill et al.
patent: 3290650 (1966-12-01), Bailey et al.
patent: 3503043 (1970-03-01), Brass
patent: 3541511 (1970-11-01), Genchi et al.
patent: 3992697 (1976-11-01), Knab et al.

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