Color conversion method

Details Color conversion method Color conversion method

2005-05-27

2008-11-18

Zimmerman, Mark K (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S518000, C345S590000, C382S167000

Reexamination Certificate

active

07453602

ABSTRACT:
To obtain suitable reproduction of an image reproduced on an input system on an output system, when a color signal A acquired from an image processing device is contained in a low-saturation area on the color space containing a color signal P of gray for an image output device at a lightness of the color signal A and a color signal O of calorimetrically achromatic color, the color signal A is converted in accordance with a conversion function that converts the color signal on a line segment BP, which connects a color signal B that is the intersection of a line segment AP connecting the color signal A and the color signal P and the outermost contour of the low-saturation area, and the color signal P into a color signal on a line segment BO connecting the color signal B and the color signal O. On the other hand, when the color signal A is not contained in the low-saturation area, the color signal is not converted.

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