Method for detecting character strings

Details Method for detecting character strings Method for detecting character strings

1989-03-09

1991-07-16

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

3582611, G06K 936

Patent

active

050331043

ABSTRACT:
A method for detecting character string regions in a document image containing figures and illustrations includes storing image data of the document, generating position data of a run of black pixels in each line by accessing the stored image data, comparing runs of black pixels for each pair of two adjoining lines and determining whether a run is a boundary candidate, and generating a rectangle whose boundaries include at least a pair of boundary candidates determined to be a character string region.

REFERENCES:
patent: 4229768 (1980-10-01), Kurahayashi et al.
patent: 4517604 (1985-05-01), Lasher et al.

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