Color converting apparatus and color converting method

A color converting apparatus, comprising:

• a color data inputting portion receiving device-independent color data;
• a color converting portion performing color conversion on the device-independent color data to generate converted image data by using information on output-end color conversion characteristics, which is determined based on information on excitation characteristics of a color that is outputted by a color outputting device;
• and
• a converted image data outputting portion outputting the converted image data,
• wherein the color outputting device outputs a color in response to a color control signal i, the color producing light with a generated light wavelength λ0 in response to incidence of light with an incident light wavelength λ, a set of excitation characteristics data Bi(λ0, λ) being defined as indicating a ratio of an amount of the light with the wavelength λ0 relative to the amount of the light with the wavelength λ, the generated light wavelength λ0 being equal to or different from the incident light wavelength λ, and
• wherein the information on the excitation characteristics of the color corresponding to the color control signal i includes a plurality of sets of excitation characteristics data Bi (λ0, λ) for a combination of a plurality of incident light wavelengths λ and a plurality of generated light wavelengths λ0.

A color converting method, comprising the steps of:

• inputting image data;
• performing color conversion on the image data to generate converted image data, the color converting step performing the color conversion by using information on output-end color conversion characteristics, which is determined based on information on excitation characteristics of a color that is outputted by a color outputting device;
• and
• outputting the converted image data.

A color converting program, comprising:

• a program of inputting image data;
• a program of performing color conversion on the image data to generate converted image data, the color converting program performing the color conversion by using information on output-end color conversion characteristics, which is determined based on information on excitation characteristics of a color that is outputted by a color outputting device;
• and
• a program of outputting the converted image data.