Electronic retrieval of information from form documents

Details Electronic retrieval of information from form documents Electronic retrieval of information from form documents

1996-09-13

1997-12-02

Couso, Yon J.

Image analysis

Image transformation or preprocessing

Image storage or retrieval

382175, G06K 900

Patent

active

056944942

ABSTRACT:
A method for retrieving user-supplied information from a scanned version of a completed document is described. The method includes the steps of obtaining a first image of the document having information printed thereon in its blank format before other information has been added to it by the user. A second image of the document is obtained after information has been added to it by the user. The two images are aligned, and for each pixel in the first image which corresponds to information on the document, those pixels are deleted from the second image to create an image which corresponds to subtraction of the first image from the second image. Finally, a step is performed to electronically restore the information added by the user which was deleted during the subtraction operation.

REFERENCES:
patent: 4298895 (1981-11-01), Arai et al.
patent: 4601056 (1986-07-01), Habitzreiter et al.
patent: 4866785 (1989-09-01), Shibano
patent: 4979136 (1990-12-01), Weiman et al.
patent: 5017763 (1991-05-01), Shepard
patent: 5115475 (1992-05-01), Lebeau
patent: 5140650 (1992-08-01), Casey et al.
patent: 5214470 (1993-05-01), Denber
patent: 5229589 (1993-07-01), Schneider
patent: 5237628 (1993-08-01), Levitan
Sezan, M.I., et al, "Survey of Recent Developments in Digital Image Restoration," Optical Engineering (May 1990) 29(5): 393-404.
Doherty, E., An Introduction to Morphological Image Processing, SPIE Optical Engineering Press, Bellingham, Washington 1992.

Affiliated with

Also associated with

Rating

Electronic retrieval of information from form 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 Electronic retrieval of information from form documents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic retrieval of information from form documents will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-808196