System for creating a device specific color profile

A method of adjusting a color input device characterization, comprising:

• measuring colorimetric values from a set of test patches;
• scanning the patches and using the characterization to convert the scanned values to colorimetric form;
• and
• remapping outputs of an input transformation of the characterization responsive to the colorimetric scanned values and predicted values for the colorimetric scanned values producing an adjusted device characterization.

A method of adjusting a base profile designated for an output color device that includes an output profile and a simulation profile, comprising:

• selecting a set of test colors;
• generating color patches with the output color device using the test colors and the output profile;
• measuring colorimetric color values for the patches;
• producing simulation color values using the simulation transform and the test colors;
• determining a transform which maps the colorimetric color values to the simulation color values for each of the patches;
• and
• combining the transform, the base profile and an inverse of the transform to produce an adjusted base profile.

A method of adjusting a base profile designated for an output color device, comprising:

• selecting a color picture image;
• outputing the image with the output color device using the base profile;
• displaying the image for review by a user;
• interactively creating a modifying transform by the user which modifies the displayed image to visually match the picture image;
• determining an inverting transform that inverts the modifying transform;
• and
• combining the inverting transform, the base profile and the inverse of the inverting transform to produce an adjusted base profile.

A method of adjusting inking levels in a profile designated for an output color device having at least four inks and a simulation transform, comprising:

• creating an intermediate profile by applying an inking transformation and an inverse of the inking transformation to input and output transforms;
• selecting a set of colors;
• generating a set of color patches from the set of colors with the output color device using the intermediate profile;
• measuring colorimetric color values for the patches;
• producing simulation color values from the set of colors using the simulation transform;
• determining a mapping transform which maps the colorimetric color values to the simulation color values for the patches;
• and
• combining the mapping transform, the intermediate transform and an inverse of the mapping transform into an adjusted profile.

A method of adjusting a base input profile designated for a color input device, comprising:

• scanning a set of color patches;
• determining a base color values for the patches using the base input profile;
• measuring colorimetric color values of the patches;
• determining a mapping transform which maps the colorimetric color values to the base color values;
• and
• combining the mapping transform, the base input profile and an inverse of the mapping transform to produce an adjusted base input profile.