Method and apparatus of refining a color imaging system of a printer

A color imaging system has a color correction table (10) connected to a printer (12). A set of refinement colors xi are selected to determine the accuracy of the system. The number of refinement colors selected is small in relation to the number of locations in the color correction table (10), e.g.,...

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Bibliographische Detailangaben
Hauptverfasser:	MALTZ, MARTIN SIDNEY, BALASUBRAMANIAN, THYAGARAJAN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CINEMATOGRAPHY CORRECTION OF TYPOGRAPHICAL ERRORS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES MAGNETOGRAPHY PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	A color imaging system has a color correction table (10) connected to a printer (12). A set of refinement colors xi are selected to determine the accuracy of the system. The number of refinement colors selected is small in relation to the number of locations in the color correction table (10), e.g., 1-50%. For each refinement color x, the printer (12) prints a color patch of corresponding color. A measuring device (14) measures each color patch and determines a corresponding colorimetric value x'. A refinement table (16) is generated which maps x' to x using an error difference between x' and x. An interpolator (22) interpolates the known error values across the refinement table based on a weighted sum of the known error values. The weighting is inversely proportional to a Euclidean distance of each interpolated error value from the known error values.