Matrix character recognition

Details Matrix character recognition Matrix character recognition

1981-12-17

1984-12-25

Martin, John C.

Image analysis

Histogram processing

For setting a threshold

G06K 968

Patent

active

044908504

ABSTRACT:
A character recognition system is disclosed in which each row of a plurality of parallel rows of binary signals representing the configuration of an unknown character is sequentially compared to a plurality of templates, each representing a known character. Each of the rows of signals is compared to feature characteristics of the unknown character twice. The rows of signals are first shifted one signal position and compared. The signals are then compared in their original position to detect an unknown character which has been printed off-center. Only those rows of signals which are required to contain a feature characteristic of the unknown characters are compared. The resulting data is utilized by a data processor apparatus identifying the unknown character.

REFERENCES:
patent: 3522586 (1966-08-01), Kiji et al.
patent: 3564498 (1966-01-01), Stern
patent: 3576534 (1971-04-01), Steinberger et al.
patent: 4153897 (1979-05-01), Yasuda et al.
patent: 4334241 (1982-06-01), Kashioka et al.

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