| 摘要 |
An image processing apparatus for color image information inputs a combination of component values of reference colors that constitute a processing color, and converts the combination of component values into a lightness value, saturation value, and hue value. The first correction factor, the second correction factor, and the third correction factor each has a value of 1.0 for a lightness value, saturation value and hue value converted from a specified color respectively, and monotonically decreases toward 0.0. The modulation amount storage means stores a modulation amount of the lightness value, saturation value, and hue value respectively. The lightness correction means computes a corrected lightness value from the converted lightness value, the saturation correction means computes a corrected saturation value from the converted saturation value, and the hue correction means computes a corrected hue value from the converted hue value by using the first, second, and third correction factors, and the modulation amount. The inverse conversion means inversely converts the corrected lightness value, corrected saturation value, and corrected hue value into a combination of component values of reference colors.
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