Profile adjustment method, profile adjustment apparatus, and non-transitory computer-readable storage medium storing profile adjustment program

A profile adjustment apparatus for adjusting a profile used in color conversion processing for performing a black point compensation, that is color conversion processing from input coordinate values in an input color space dependent on an input device to output coordinate values in an output color space dependent on an output device, the apparatus comprising:

• an adjustment target profile reception unit that receives any one of an input profile representing a correspondence relationship between the input coordinate values and device independent coordinate values in a profile connection space and an output profile representing a correspondence relationship between the device independent coordinate values and the output coordinate values as an adjustment target profile;
• a black point information storage unit that obtains black point information from a color conversion table and stores the black point information in a private tag when the black point information representing a black point in the color conversion table is not stored in the private tag of the adjustment target profile before adjusting the color conversion table stored in the adjustment target profile;
• and
• an adjustment reception unit that receives an adjustment of the color conversion table.

A non-transitory computer-readable storage medium storing a profile adjustment program for adjusting a profile used in color conversion processing for performing a black point compensation, that is color conversion processing from input coordinate values in an input color space dependent on an input device to output coordinate values in an output color space dependent on an output device, the program causing a computer to realize:

• an adjustment target profile reception function for receiving any one of an input profile representing a correspondence relationship between the input coordinate values and device independent coordinate values in a profile connection space and an output profile representing a correspondence relationship between the device independent coordinate values and the output coordinate values as an adjustment target profile;
• a black point information storage function for obtaining black point information from a color conversion table and storing the black point information in a private tag when the black point information representing a black point in the color conversion table is not stored in the private tag of the adjustment target profile before adjusting the color conversion table stored in the adjustment target profile;
• and
• an adjustment reception function for receiving an adjustment of the color conversion table.