Facsimile and static presentation processing – Natural color facsimile – Color correction
Patent
1995-07-19
1998-04-28
Lee, Thomas D.
Facsimile and static presentation processing
Natural color facsimile
Color correction
358520, G03F 308
Patent
active
057452636
ABSTRACT:
A color correcting method of a color printer is provided. Input image data expressed by lightness (or brightness), saturation, and hue is compared with a color expression range of a color printer similarly expressed by lightness, saturation, and hue. The input image data is used without change as output data with respect to that input image data which is found to overlap the color expression range of the color printer as a result of the comparison. Output data is formed by changing the lightness of the input image data when the data is converted to a point on the outer edge of the color expression range of the color printer with respect to any portion of the input image data which does not overlap with the color expression range of the color printer.
REFERENCES:
patent: 4758885 (1988-07-01), Sasaki et al.
patent: 5185661 (1993-02-01), Ng
Frommer William S.
Grant II Jerome
Lee Thomas D.
Sinderbrand Alvin
Sony Corporation
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