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:
May. 05, 1998
Filed:
Jan. 24, 1996
Rainer Schielke, Fleckeby, DE;
Linotype-Hell AG, Kiel, DE;
Abstract
A method and apparatus for the correction of the image values of faulty sensors of an optoelectronic transducer comprising a plurality of sensor elements. In order to avoid errors at light/dark transitions in the scanned original, the erroneous image value of a faulty sensor element is fully corrected in areas of the original having nearly constant brightness values and is only slightly corrected in regions of light/dark transitions (contours) in the original. In order to achieve this, the erroneous image value of a faulty sensor element is replaced by the image value of the sensor element neighboring the faulty sensor element that comprises the least difference from the erroneous image value in terms of amount. Alternatively, the erroneous image value is replaced by the median value calculated from the image value of the faulty sensor element and from the image values of the sensor elements neighboring the faulty sensor element.