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:
Apr. 06, 1993
Filed:
Aug. 29, 1991
Applicant:
Inventor:
David Birnbaum, Pittsford, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358 80 ;
Abstract
A color conversion system is disclosed for converting raw RGB scanner data into a colorimetric system. The raw scanner data are processed in three stages. In the first stage, the raw RGB signals are converted into END-like RGB signals. This transformation is performed by passing each RGB signal separately through a lookup table to transform it to the equivalent END signal. In the second stage, the END signals are transformed into tristimulus signals XYZ. In the final stage, the XYZ signals are subjected to a non-linear transformation to convert them into a colorimetric system.