Dynamically-generated color look-up table

A method for use in a color management system executing in a computer system, for dynamically generating at runtime, using device profile information, a look-up table for conversion of color data from one color space to another, the method comprising:

• building a transformation using the device profile;
• selecting, at runtime, a grid interval from a plurality of grid intervals, the selected grid interval corresponding to a step value between grid points for a color look-up table;
• generating device dependent color data, as a range of values stepping by the selected grid interval;
• and
• converting the device dependent color data into device independent color data using the transformation;
• and
• building the color look-up table using the device independent color data.

A computer-readable memory medium in which computer-executable process steps are stored, the process steps for use in a color management system executing in a computer system, for dynamically generating, using device profile information, a look-up table for conversion of color data from one color space to another, wherein the process steps comprise:

• an assigning step to assign a weight to each of table size, speed and accuracy factors;
• a first determining step to determine, for plural table sizes, corresponding speed and accuracy scores using the color management system;
• a second determining step to determine, for each of the plural table sizes, an aggregate of weighted scores corresponding to table size and speed and accuracy;
• a selecting step to select one of the plural table sizes using the aggregate of each of the plural table sizes;
• a generating step to generate a look-up table having a selected one of the plural table sizes.

Computer-executable program code stored on a computer readable medium, said computer-executable program code for use in a color management system executing in a computer system, for dynamically generating, using device profile information, a look-up table for conversion of color data from one color space to another, the computer-executable program code comprising:

• code to assign a weight to each of table size, speed and accuracy factors;
• code to determine, for plural table sizes, corresponding speed and accuracy scores using the color management system;
• code to determine, for each of the plural table sizes, an aggregate of weighted scores corresponding to table size and speed and accuracy;
• code to select one of the plural table sizes using the aggregate of each of the plural table sizes;
• code to generate a look-up table having a selected one of the plural table sizes.

A computer-readable memory medium in which computer-executable process steps are stored, the process steps for use in a color management system executing in a computer system, for dynamically generating at runtime, using device profile information, a look-up table for conversion of color data from one color space to another, wherein the process steps comprise:

• a building step to build a transformation using the device profile;
• a selecting step of selecting, at runtime, a grid interval from a plurality of grid intervals, the selected grid interval corresponding to a step value between grid points for a color look-up table;
• a generating step to generate device dependent color data, as a range of values stepping by the selected grid interval;
• a converting step to convert the device dependent color data into device independent color data using the transformation;
• and
• a building step to build the color look-up table using the device independent color data.

Computer-executable program code stored on a computer readable medium, said computer-executable program code for use in a color management system executing in a computer system, for dynamically generating at runtime, using device profile information, a look-up table for conversion of color data from one color space to another, said computer-executable program code comprising:

• code to build a transformation using the device profile;
• code to select, at runtime, a grid interval from a plurality of grid intervals, the selected grid interval corresponding to a step value between grid points for a color look-up table;
• code to generate device dependent color data, as a range of values stepping by the selected grid interval;
• code to convert the device dependent data into device independent color data using the transformation;
• and
• code to build the color look-up table using the converted color data.