Image processing apparatus and method

Details Image processing apparatus and method Image processing apparatus and method

1997-10-14

1999-10-26

Johns, Andrew W.

Image analysis

Image enhancement or restoration

Object boundary expansion or contraction

382259, G06K 944

Patent

active

059741910

ABSTRACT:
An image containing characters and lines, which is inputted by a scanner or the like, is binarized and stored in a memory. A thickening process is repeatedly applied on groups of significant bits stored in the memory, until a predetermined condition is fulfilled. After this process, the thickened image is thinned at least a greater number of times than the number of times the thickening process is repeated in order to eliminate lines. As a result, characters are determined to exist at areas where groups composed of remaining significant dots exist, then characters are separated from the input image based on the areas of groups composed of the remaining significant dots.

REFERENCES:
patent: 5065437 (1991-11-01), Bloomberg
patent: 5202933 (1993-04-01), Bloomberg
patent: 5335294 (1994-08-01), Niki

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