Character information separating apparatus for printed character

Details Character information separating apparatus for printed character Character information separating apparatus for printed character

1983-12-07

1985-07-02

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 48, G06K 934

Patent

active

045272832

ABSTRACT:
An apparatus for a printed character reading system in which prior to the recognition process, the information obtained by reading the characters on a source document is separated line by line to obtain a line information and then, starting at its one end, the line information is successively separated character by character to obtain a character information for each of the individual characters. In this apparatus, the read character information is stored primarily character by character each for approximately one and a half line width and the 1.5-line information is then dissected in the line direction into blocks each having a line length of two character spacings. Then, a linewise projection information is produced for each of the blocks so that in accordance with the resulting projection information the intended line information is separated into blocks and then the character information for the respective characters are separated successively from the character information contained in each of the blocks.

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patent: 3506807 (1970-04-01), Malaby
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patent: 4251799 (1981-02-01), Jih
patent: 4292622 (1981-09-01), Henrichon
patent: 4377803 (1983-03-01), Lotspiech et al.
Baumgartner, "Iterative Segmentation" IBM Tech. Disclosure Bulletin, vol. 14, No. 9, Feb., 1972, pp. 2643-2644.
Bishop et al., "Character Rec. Approach Involving Histogram Classification" IBM Tech. Disclosure Bulletin, vol. 21, No. 9, Feb., 1979, pp. 3461-3467.

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