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:
Mar. 30, 1993
Filed:
Aug. 23, 1991
Keith A Walker, Rochester, NY (US);
Donald A Koop, Hamlin, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Exposure areas in a calibration original are automatically found by reference to a registration mark having a predetermined dimensional orientation relative to the exposure areas. A scanner produces image signals representative of both the exposure areas and the registration mark. A pattern recognition module employs edge detection to distinguish image signals corresponding to the registration mark. Two-dimensional Cartesian coordinates are then extracted from the registration mark and used to further distinguish image signals corresponding to the exposure areas, thereby locating exposure areas although the original may not be properly aligned in the scanner. A preferred registration mark is a pair of orthogonal, intersecting guide bars. By further defining the nominal length of the guide bars, the size of the mark can be established and the exposure areas can be located despite dimensional changes due to magnification error in the scanner.