Image analysis – Image segmentation – Separating document regions using preprinted guides or markings
Patent
1997-12-02
2000-10-31
Boudreau, Leo H.
Image analysis
Image segmentation
Separating document regions using preprinted guides or markings
382171, 382173, 382168, 358462, 358464, 358453, G06K 934, G06K 900, H04N 140, H04N 138, H04N 1387
Patent
active
061414441
ABSTRACT:
A ruled line deleting method which accurately deletes a ruled line existing adjacent to a border of an area for filling characters in an image obtained from a ruled form without increasing a probability of occurrence of an erroneous deletion of a character. A scanning area is defined on the image of the ruled form based on each border of the character area. Black runs are extracted from the scanning area, each of the black runs having a length greater than a predetermined length. The black pixels corresponding to the extracted black runs are changed to white pixels in the image of the ruled form.
REFERENCES:
patent: 4292622 (1981-09-01), Henrichon, Jr.
patent: 5119437 (1992-06-01), Kuwamura et al.
patent: 5335290 (1994-08-01), Cullen et al.
patent: 5563403 (1996-10-01), Bessho et al.
Boudreau Leo H.
Novik Dimitry A.
Ricoh & Company, Ltd.
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