Computer graphics processing and selective visual display system – Computer graphics processing – Attributes
Reexamination Certificate
2008-04-11
2011-10-25
Sajous, Wesner (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Attributes
C345S428000, C345S600000, C345S619000, C345S549000, C348S033000, C348S254000, C348S557000, C348S602000, C358S504000, C358S509000, C358S518000, C358S525000, C382S167000, C382S254000, C382S274000, C382S300000
Reexamination Certificate
active
08044965
ABSTRACT:
In order to calculate the calorimetric value of a color patch under a given viewing illuminant, a plurality of colorimetric value sets obtained by measuring the colors of color patches under a plurality of illuminants are stored in a memory, the type of spectral distribution and white point information of the viewing illuminant are obtained (S12), and a calorimetric value set corresponding to the type of spectral distribution of the viewing illuminant is selected (S13). A colorimetric value set under the viewing illuminant is calculated from the selected calorimetric value set, on the basis of the white point information of the viewing illuminant and the white point information of the illuminant of the selected colorimetric value set (S14).
REFERENCES:
patent: 5546195 (1996-08-01), Arai
patent: 6072464 (2000-06-01), Ozeki
patent: 2003/0020727 (2003-01-01), Newman
patent: 2003/0072043 (2003-04-01), Hagai et al.
patent: 2005/0078122 (2005-04-01), Ohga
patent: 2009/0284586 (2009-11-01), Ramstad
patent: 2002-218266 (2002-08-01), None
patent: 3634633 (2005-01-01), None
Suesstrunk S. E. et al. “Chromatic adaptation performance of different RGB sensors” Proceedings of the SPIE, SPIE, Bellingham, VA, vol. 4300, Jan. 1, 2001, pp. 172-183, XP002272200 ISSN: 0277-786X.
All of the above references were cited in a Aug. 14, 2008 European Search Report of the counterpart European Patent Application No. 08155171.5.
Canon Kabushiki Kaisha
Cowan Liebowitz & Latman P.C.
Sajous Wesner
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