Color conversion method and profile generation method
AssigneeCanon Kabushiki Kaisha
InventorTakuya Shimada
Life of this patent
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Abstract
A tincture adjustment value used to adjust a monochrome signal to a tincture desired by a user is set, and a tincture conversion table and chromaticity line table are generated based on that tincture adjustment value and the profile of an image output apparatus. Using the generated tables, a lightness signal L* corresponding to an input monochrome signal is converted into a distance signal l on a chromaticity line, and the distance signal l is converted into a chromaticity signal (a*, b*). The lightness signal L* and chromaticity signal (a*, b*) are converted into a color signal of the image output apparatus.
Claims14
1-40. (canceled)
A color process method comprising:
- setting a tint adjustment value used to adjust an image signal;
- and
- converting the image signal into a tinted monochrome image signal by using the set tint adjustment value,
- wherein, in the converting step, a setting range for the tint adjustment value is limited on a color space to prevent the image signal from excessive tincture for forming the tinted monochrome image signal.
A color processing apparatus comprising:
- a setting unit that sets a tint adjustment value used to adjust an image signal;
- and
- a conversion unit that converts the image signal into a tinted monochrome image signal by using the set tint adjustment value,
- wherein the setting unit limits a setting range for the tint adjustment value on a color space for preventing the image signal from excessive tincture for forming tinted monochrome image.
Dependencies are inferred from the claim text.