| 摘要 |
<p>Each pixel of an input image is subjected to first color conversion by means of colorimetric color reproduction and converted to a first color device value of a target color space. Further, a difference DI between a white luminance of an originating color space and a luminance of pixels of the originating color space is calculated. When generating an output image, pixels with a difference DI of 0 keeps the color device value of the originating color space. For the pixels with a difference DI greater than 0, a second color device value is calculated as a color device value of the output image, the second color device value being a sum of the abovementioned color device value and a value which is obtained by multiplying the difference between the first color device value and the abovementioned color device value by a coefficient that is greater than 0 and less than or equal to 1. Due to this, when generating an output image of a target color space from an input image of an originating color space, the color image can be reproduced more brightly while achieving coincident color appearance.</p> |
