CREATING A COLOR GAMUT LOOK-UP-TABLE

摘要

A color look-up-table (LUT) is created for use by an imaging system which uses a resource to display an image and/or provides an attribute of the image. A method of creating the LUT, comprises selecting a threshold value of resource usage and/or metric of the attribute. A predetermined color look-up-table representing a mapping from color values of a first color gamut to color values displayable by the imaging system is accessed. The predetermined color look-up-table has nodes defining colors to be displayed for the said color values. Resource usage and/or attribute values associated with the said nodes are compared with the threshold value thereby determining the set of nodes of the predetermined gamut having a resource usage and/or attribute values less than the threshold value. A new look-up-table is created which maps the said predetermined color gamut look-up-table to the said set of nodes

主权项

1. A non-transitory computer-readable data storage medium storing computer-executable code that a computing device executes to:
from an original color look-up table for a printing system that has a plurality of nodes mapping color values of a source color gamut to color values of a target color gamut, remove each node having a colorant usage greater than a threshold; and generate a replacement node for each removed node within the original color look-up table to generate a replacement color look-up table mapping the color values of the source color gamut to the color values of the target color gamut, the replacement color look-up table having the generated replacement nodes and the nodes of the original color look-up table that the colorant usage of which is not greater than the threshold.