Fast primary mapping and gamut adaptation to construct three dimensional lookup tables

A system for rendering colors between color devices, the system comprising:

• a source color device having a source color gamut with a white point, a black point, and primary points;
• a destination color device having a destination color gamut with a white point, a black point, and primary points;
• and
• a processing device coupled between the source color device and the destination color device;
• wherein the processing device is configured to perform white and black point adaptation such that the source white point is mapped to the destination white point and the source black point is mapped to the destination black point, thereby establishing adapted white and black points, to determine aimed primary points from a combination of the source and destination primary points, the destination gamut, and color preference, to map important lines from the source gamut to the destination gamut using the aimed primary points, to map gamut surface points from the source gamut to the destination gamut using the mapped important lines, and to process interior points of the source gamut surface.

A method of transferring color images between color devices, the method comprising:

• establishing a source color gamut for a source device, the source color gamut having a white point, a black point, and primary points;
• establishing a destination color gamut for a destination device, the destination color gamut having a white point, a black point, and primary points;
• performing white and black point adaptation such that the source white point is mapped to the destination white point and the source black point is mapped to the destination black point, thereby establishing adapted white and black points;
• processing neutral points from the source color gamut to the destination color gamut;
• determining aimed primary points on an aimed gamut surface of an aimed gamut from the source and destination primary points, the destination gamut, and a color preference;
• computing hue rotation for the aimed primary points;
• mapping, from the source gamut to the destination gamut, nodes between the white point and each of the six primaries, nodes between the black point and each of the six primaries, and nodes between two neighbor primaries;
• mapping gamut surface points from the source gamut to the destination gamut using the nodes between the white point and each of the six primaries, the nodes between the black point and each of the six primaries, and the nodes between two neighbor primaries;
• and
• processing interior points of the source gamut surface.