Type font optical character recognition system

Details Type font optical character recognition system Type font optical character recognition system

1981-01-30

1983-04-05

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 27, 382 41, G06K 946

Patent

active

043792839

ABSTRACT:
Stored in a two-dimensional memory is a read-in character information of one character which was scanned by an optical scanner and digitized into character digital bits and background digital bits. The character information on the storage plane of the memory is divided into a plurality of segments using 4.times.4 bit meshes as a unit and the number of the character digital bit meshes included in each of the segments is counted. A collection of segment information obtained from these count values is used as an input information and is compared by pattern matching with each of a collection of standard character information preliminarily prepared for a set of characters in the same information form as the input information, thereby effecting the desired type font character recognition.

REFERENCES:
patent: 3522586 (1970-08-01), Kiji et al.
patent: 3634822 (1972-01-01), Chow
patent: 3634823 (1972-01-01), Dietrich et al.
patent: 3805239 (1974-04-01), Watanabe
patent: 3831146 (1974-08-01), Rundle
patent: 4274079 (1981-06-01), Todd et al.
patent: 4288779 (1981-09-01), Otsu et al.

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