Color processing device, color processing method, and storage medium

A computer readable medium storing a program causing a computer to execute a process for color processing, the process comprising:

• converting a combination of values of N−1 colors, which are obtained by eliminating a specific color included in N colors from an input-color signal expressing a color by a combination of values of the N colors, into a corresponding combination of values of M−1 colors, N being equal to or larger than 4, M being larger than N;
• and
• if a total value of the values of the M−1 colors after the conversion and the value of the specific color included in the input-color signal exceeds a predetermined limit value, changing a value of at least one of M colors, which are obtained by adding the specific color to the M−1 colors, such that the total value becomes the limit value or smaller, and outputting values of the M colors as an output color signal.

An image processing method comprising:

• converting a combination of values of N−1 colors, which are obtained by eliminating a specific color included in N colors from an input-color signal expressing a color by a combination of values of the N colors, into a corresponding combination of values of M−1 colors, N being equal to or larger than 4, M being larger than N;
• and
• if a total value of the values of the M−1 colors after the conversion and a value of the specific color included in the input-color signal exceeds a predetermined limit value, changing a value of at least one of M colors, which are obtained by adding the specific color to the M−1 colors, such that the total value becomes the limit value or smaller, and outputting values of the M colors as an output color signal.