Image analysis – Image enhancement or restoration
Patent
1995-05-22
1997-01-14
Boudreau, Leo
Image analysis
Image enhancement or restoration
382289, 382291, 382245, G06K 940
Patent
active
055948154
ABSTRACT:
The process for enhancing images of scanned documents identifies a variety of items in the scanned document which could make optical character recognition and other document image processing difficult or impossible. These items include identifying skew, registration, speck, lines intersecting printed matter, reverse printing, shaded printed matter. The process allows to register such items, take steps to correct skew and image registration, as well as reverse invert printing. Items to be removed are listed for deletion in one step. The image of the scanned document is stored and processed as a run-lngth coded image, except for a some operations in which parts of the run length coded image are converted to pixel image code for particular substeps of the process. The result of such a substep, e.g. a modified image, is then re-converted to run-length code.
REFERENCES:
patent: 4093941 (1978-06-01), Bryan et al.
patent: 4665441 (1987-05-01), Sakaue et al.
patent: 4703363 (1987-10-01), Kitamura
patent: 4783840 (1988-11-01), Song
patent: 4837845 (1989-06-01), Pruett et al.
patent: 4866784 (1989-09-01), Barski
patent: 4876730 (1989-10-01), Britt
patent: 4876732 (1989-10-01), Miyagawa et al.
patent: 4876733 (1989-10-01), Lavin
patent: 4929085 (1990-05-01), Kajihara
patent: 4941189 (1990-07-01), Britt
patent: 4975977 (1990-12-01), Kurosu et al.
patent: 4980923 (1990-12-01), Kawamoto et al.
patent: 4995089 (1991-02-01), Altrieth, III
patent: 5001766 (1991-03-01), Baird
patent: 5027227 (1991-06-01), Kita
patent: 5033104 (1991-07-01), Amano
patent: 5034733 (1991-07-01), Okazawa et al.
patent: 5048109 (1991-09-01), Bloomberg et al.
patent: 5054098 (1991-10-01), Lee
patent: 5060276 (1991-10-01), Morris et al.
patent: 5063526 (1991-11-01), Kagawa
patent: 5063605 (1991-11-01), Samad
patent: 5065437 (1991-11-01), Bloomberg
patent: 5068904 (1991-11-01), Yamazaki
patent: 5335086 (1994-08-01), Kitamura
patent: 5335290 (1994-08-01), Cullen et al.
Allen Dana R.
Fast Bruce B.
Boudreau Leo
Schenck Paul F.
Tran Phuoc
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