Computer graphics processing and selective visual display system – Computer graphics processing – Attributes
Reexamination Certificate
2006-04-04
2010-02-16
Sajous, Wesner (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Attributes
C345S589000, C345S591000, C345S604000, C348S674000, C358S001900, C358S003010, C358S518000, C358S520000, C382S162000, C382S167000
Reexamination Certificate
active
07663641
ABSTRACT:
Gamut-mapping from a source device to a destination device is performed in a perceptually linear color space such as CIECAM02 by separating a source image into primary color components and processing each primary component separately by mapping a source cusp point with a destination cusp point. The mapped primary components are then summed and a resultant destination image is obtained. Alternatively, hue rotation is performed by determining a relative position of an input color between the nearest primary and the nearest secondary color in a source hue wheel. The determined relative position in the source hue wheel is used to find a corresponding location in a destination hue wheel so that a hue angle for the destination point can be obtained. In either process, the source and destination points are mapped using a cusp-to-cusp mapping process, and if the source point lies outside of the destination boundary after the cusp mapping, the point is mapped to the three-dimensional surface of the destination gamut. Finally, results of the mapping process are converted from device-independent color appearance space values to tristimulus values, and from tristimulus values to a color space of the destination device.
REFERENCES:
patent: 5083344 (1992-01-01), Pettit et al.
patent: 5452017 (1995-09-01), Hickman
patent: 5611030 (1997-03-01), Stokes
patent: 5903275 (1999-05-01), Guay
patent: 5963201 (1999-10-01), McGreggor et al.
patent: 6147772 (2000-11-01), Pritchett
patent: 6297826 (2001-10-01), Semba et al.
patent: 6539110 (2003-03-01), Myers
patent: 6594388 (2003-07-01), Gindele et al.
patent: 6611356 (2003-08-01), Shimizu et al.
patent: 6618499 (2003-09-01), Kohler et al.
patent: 6719392 (2004-04-01), Qiao
patent: 6720973 (2004-04-01), Butler
patent: 6765586 (2004-07-01), Yamazaki et al.
patent: 6833937 (2004-12-01), Cholewo
patent: 6995865 (2006-02-01), Motomura
patent: 7071965 (2006-07-01), Baker
patent: 7379208 (2008-05-01), Henley et al.
patent: 2003/0072016 (2003-04-01), Dalrymple et al.
patent: 2003/0117457 (2003-06-01), Qiao
patent: 2003/0138142 (2003-07-01), Hung
patent: 2003/0234793 (2003-12-01), Stokes et al.
patent: 2004/0086176 (2004-05-01), Meier et al.
patent: 2004/0136014 (2004-07-01), Maltz
patent: 2005/0073730 (2005-04-01), Huang et al.
patent: 2005/0083344 (2005-04-01), Higgins
patent: 2005/0248784 (2005-11-01), Henley et al.
patent: 2005/0248785 (2005-11-01), Henley et al.
patent: 2006/0007460 (2006-01-01), Bogdanowicz et al.
patent: 2006/0274211 (2006-12-01), White
G.J. Braun, et al., “Gamut Mapping for Pictorial Imates”, Rochester Institute of Technology, Rochester, N. Y. (Cited in U.S. Appl. No. 10/840,564 and copy provided therein).
E.D. Montag, et al., “Gamut Mapping: Evaluation of Chroma Clipping Techniques for Three Destination Gamuts”, The Sixth Color Imaging Conference: Color Science, Systems, and Applications, Rochester Institute of Technology, pp. 57-81 (Cited in U.S. Appl. No. 10/840,564 and copy provided therein).
G. Marcu, “Gamut Mapping in Munsell Constant Hue Sections”, The Sixth Color Imaging Conference : Color, Science, Systems, and Applications, pp. 159-162. (Cited in U.S. Appl. No. 10/840,564 and copy provided therein).
R. Kimmel, et al., “Space Sensitive Color Gamut Mapping: A Variational Approach”, HP Laboratories, Hewlett-Packard Company 2002, pp. 1-14 (Cited in U.S. Appl. No. 10/840,564 and copy provided therein).
J. Morovic, et al., “The Fundamentals of Gamut Mapping: A Survey”, Journal of Imaging Science and Technology, Society for Imaging Science and Technology, vol. 45, No. 3, pp. 283-290, Springfield, May-Jun. 2001 (Cited in U.S. Appl. No. 10/840,564 and copy provided therein).
“Color Gamut and Gamut Mapping”, <http://www.wasatchinc.com/digigrafix.gamut.html> visited Apr. 1, 2004. (Cited in U.S. Appl. No. 10/840,564).
“Monitor Calibration and Profiling”, <http://www.drycreekphoto.com/Learn/monitor—calibration.html>, visited Apr. 2, 2004. (Cited in U.S. Appl. No. 10/840,564 and copy provided therein).
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Microsoft Corporation
Sajous Wesner
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