The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 16, 2003
Filed:
Jun. 14, 2000
Applicant:
Inventor:
John T. Newell, Fairport, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 1/114 ; G03G 1/500 ; G06K 9/22 ; H04N 1/04 ; H04N 1/40 ;
U.S. Cl.
CPC ...
G01B 1/114 ; G03G 1/500 ; G06K 9/22 ; H04N 1/04 ; H04N 1/40 ;
Abstract
Automatic detection of the width and position of a document which is substantially insensitive to dust and dirt as well as electrical noise is provided with an image capture device. When a document is staged for image capture, the image capture device collects several scanlines of the backing without the document and several scanlines of the lead edge of the document with the backing. The backing image collected is then subtracted from the lead edge image collected, and the resulting image is readjusted. Accordingly, variations in the backing areas of the lead edge image are removed and edge detection failure or error are reduced or eliminated.