Color conversion coefficient generating apparatus and method, color processing apparatus, and non-transitory computer readable medium
AssigneeFuji Xerox Co., Ltd.
InventorYasunari KISHIMOTO
Life of this patent
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Abstract
A color conversion coefficient generating apparatus includes a color vision degree coefficient calculating unit and a color conversion coefficient calculating unit. The color vision degree coefficient calculating unit calculates a color vision degree coefficient indicating the degree of color vision deficiency. The color conversion coefficient calculating unit calculates a color conversion coefficient used to convert an input color value, on the basis of correspondence between the color vision degree coefficient, calculated by the color vision degree coefficient calculating unit, and sensitivity characteristics of long—(L), medium—(M), and short—(S) wavelength-sensitive cones.
Claims15
A color conversion coefficient generating apparatus comprising:
- a color vision degree coefficient calculating unit that calculates a color vision degree coefficient indicating the degree of color vision deficiency;
- and
- a color conversion coefficient calculating unit that calculates a color conversion coefficient used to convert an input color value, on the basis of correspondence between the color vision degree coefficient, calculated by the color vision degree coefficient calculating unit, and sensitivity characteristics of long—(L), medium—(M), and short—(S) wavelength-sensitive cones.
A color processing apparatus comprising:
- an obtaining unit that obtains a color value serving as a target of color processing;
- a color vision degree coefficient calculating unit that calculates a color vision degree coefficient indicating the degree of color vision deficiency;
- a color conversion coefficient calculating unit that calculates a color conversion coefficient used to convert the color value, obtained by the obtaining unit, on the basis of correspondence between the color vision degree coefficient, calculated by the color vision degree coefficient calculating unit, and sensitivity characteristics of long—(L), medium—(M), and short—(S) wavelength-sensitive cones;
- and
- a color processing unit that applies color conversion processing to the color value using the color conversion coefficient calculated by the color conversion coefficient calculating unit.
A non-transitory computer readable medium storing a program causing a computer to execute a process, the process comprising:
- calculating a color vision degree coefficient indicating the degree of color vision deficiency;
- and
- calculating a color conversion coefficient used to convert an input color value, on the basis of correspondence between the calculated color vision degree coefficient and sensitivity characteristics of long—(L), medium—(M), and short—(S) wavelength-sensitive cones.
A color conversion coefficient generating method comprising:
- calculating a color vision degree coefficient indicating the degree of color vision deficiency;
- and
- calculating a color conversion coefficient used to convert an input color value, on the basis of correspondence between the calculated color vision degree coefficient and sensitivity characteristics of long—(L), medium—(M), and short—(S) wavelength-sensitive cones.
Dependencies are inferred from the claim text.