| 摘要 |
A spectral power distribution of an original reference white which is a reference white of an original color space is restored from a color temperature of the original reference white or from a correlated color temperature obtained from the chromaticity of the original reference white when the color temperature is unknown and a spectral power distribution of an aimed reference white which is a reference white of an aimed color space from a color temperature of the aimed reference white or a correlated color temperature obtained from chromaticity of the aimed reference white when the color temperature is unknown. A surface reflectance of an arbitrary color in the original color space is restored by using tristimulus values of the arbitrary color, the spectral power distribution of the original reference white and human color matching function to obtain tristimulus values of a color in the aimed color space. With this, it is possible to make colors in the color image devices having different color temperatures of the reference whites coincident without necessity of constraint of special observing condition influencing human color adaptation and with minimum amount of calculation.
|
