Apparatus for detecting marks on documents

Image analysis – Image segmentation – Separating document regions using preprinted guides or markings

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

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.

Rate now

     

Profile ID: LFUS-PAI-O-1497535

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.