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:
Jul. 27, 1982
Filed:
Apr. 30, 1980
Stephen E Niemczyk, Enfield, CT (US);
Richard G Hubbard, Jr, Manchester, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A color calibration procedure for use with a color raster scanner includes the steps of: identifying small areas on the source chart, or medium to be scanned, which contain only one color and assigning a color number to each area; positioning the scan head of the color raster scanner at two locations within the area identified and establishing the coordinate values for each of these two areas so as to bound by the coordinate definition the corners of a rectangular portion within the identified area; recording at each of a plurality of samples between the defined coordinates in each area the color samples resident therein; comparing the color samples of each color number obtained from each area with the samples obtained for each other color number of the other areas to determine the percentage of interference between colors and identifying the number of color samples which interfere with two or more colors as uncalibrated samples; and modifying the limits for a selected one of the spectral parameters associated with the interfering colors to minimize the percentage of uncalibrated data samples.