Color correction using a device-dependent display profile
View Patent ↗A method includes obtaining a chromatic correction for a display device based on a device-dependent display profile. The method may ensure that images that appear on a display device in a soft proofing environment will be visually equivalent to images that appear on print media.
1. A method comprising:
determining chromaticity corrections corresponding to red, green, blue, cyan, magenta and yellow regions of color in a linear device-dependent coordinate space associated with an output device;
applying the chromaticity corrections to device-independent coordinates throughout said corresponding regions of color to produce chromatically corrected device-independent coordinates; and
displaying colors on a display based on the chromatically corrected device-independent coordinates.
2. The method of claim 1 wherein determining chromaticity corrections further comprises calculating correction factors corresponding to each region of color that are piecewise linear correction functions within the corresponding regions of color.
3. The method of claim 2 wherein each piecewise linear correction function operates on the linear device-dependent coordinates within the corresponding region of color.
4. The method of claim 3 wherein the linear device-dependent coordinates comprise linear RGB coordinates.
5. The method of claim 1 wherein determining chromaticity corrections further comprises calculating a set of correction levels, wherein the correction levels correspond to adjustments to the hue, saturation, and brightness for the corresponding regions of color for the chromaticity corrections.
6. The method of claim 5 wherein the device-independent coordinates comprise coordinates in tristimulus space.
7. The method of claim 5 wherein the device-independent coordinates comprise coordinates in chromaticity space.