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:
Aug. 17, 2004
Filed:
Dec. 13, 1999
Applicant:
Inventor:
Patrick Alexandre, Gray, FR;
Assignee:
Sollac, Puteaux, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 9/00 ; H04N 7/18 ;
U.S. Cl.
CPC ...
G06K 9/00 ; H04N 7/18 ;
Abstract
A method for examining the surface of an unwinding strip to detect a surface fault. The method includes forming at least a digital image of the strip having a set of image elements each with an assigned digital value. The digital image is filtered to detect surface defects. The filter digital image is processed to identify the type of surface fault in the strip. Before the digital image processing step, the digital image is segmented into doubtful zones each containing a surface defect with the image processing step being carried out on the doubtful zones.