Image analysis – Image segmentation – Separating document regions using preprinted guides or markings
Patent
1994-11-21
1997-07-15
Couso, Jose L.
Image analysis
Image segmentation
Separating document regions using preprinted guides or markings
382100, 382184, 382317, 235386, 355 45, 369176, G06K 934
Patent
active
056490267
ABSTRACT:
An apparatus and method is provided for detecting and sorting a document containing an address change request from a group of documents. The apparatus includes a document transport for conveying the document along a selected path of movement. An image scanner positioned along the selected path is provided for reading an image of the document or of a selected area on the document. The image scanner provides density levels corresponding to discrete areas on the document. An image processor determines a set of density levels corresponding to a test line passing through the selected area on the document. Density level transitions are detected along the selected line when two adjacent areas on the document have substantially different density levels. If a sufficient number of density level transitions are detected along the selected line, the document is sorted from the group of documents.
REFERENCES:
patent: 4300123 (1981-11-01), McMillin et al.
patent: 4479194 (1984-10-01), Fogg et al.
patent: 4722008 (1988-01-01), Ibaraki et al.
patent: 4863037 (1989-09-01), Stevens et al.
patent: 4885785 (1989-12-01), Reynolds et al.
patent: 5086486 (1992-02-01), Yamada
patent: 5087981 (1992-02-01), Ng et al.
patent: 5119211 (1992-06-01), Sakurai
patent: 5140440 (1992-08-01), Sasaki
patent: 5144615 (1992-09-01), Kobayashi
patent: 5182796 (1993-01-01), Shibayama et al.
patent: 5258831 (1993-11-01), Kato et al.
patent: 5278609 (1994-01-01), Sakaida
patent: 5293431 (1994-03-01), Hayduchok et al.
patent: 5341227 (1994-08-01), Kumashiro
patent: 5383754 (1995-01-01), Sumida et al.
patent: 5384646 (1995-01-01), Godshalk et al.
patent: 5426519 (1995-06-01), Banton
patent: 5460273 (1995-10-01), Stevens et al.
Couso Jose L.
Do Anh Hong
Opex Corporation
LandOfFree
Apparatus for detecting marks on documents does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for detecting marks on documents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for detecting marks on documents will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1497535