Apparatus for and method of enhancing color temperature in...

Details Apparatus for and method of enhancing color temperature in... Apparatus for and method of enhancing color temperature in...

2007-08-28

2007-08-28

Lee, Thomas D. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S504000

Reexamination Certificate

active

10319844

ABSTRACT:
A method of enhancing a color temperature of a color image includes calculating gains for input image signals based on a predetermined gain function. A first offset value corresponding to a change in a pedetermined color temperature of output signals is calculated. A second offset value is calculated based on the gains and the first offset value. The second offset value is added to a B signal of the output signals. A compensation gain is calculated in consideration of intensity of the B signal to which the second offset value is added. The compensation gain is added to a G signal. Thus, a desired color temperature can be obtained regardless of the intensities of R, G, and B signals.

REFERENCES:
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patent: 6947080 (2005-09-01), Ikeda
patent: 2001/0030278 (2001-10-01), Koshimizu
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Japanese Office Action dated Apr. 25, 2006 issued with respect to Japanese Patent Application No. 2002-375595.
European Search Report issued with respect to Application No. 02024300.2, which corresponds to the above-reference application.

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