Method of color correction which preserves perceived color differences

Randall G. Guay

doi:10.1117/12.2322244

1 May 1992 Method of color correction which preserves perceived color differences

Randall G. Guay

Proceedings Volume 1670, Color Hard Copy and Graphic Arts; (1992) https://doi.org/10.1117/12.2322244
Event: SPIE/IS&T 1992 Symposium on Electronic Imaging: Science and Technology, 1992, San Jose, CA, United States

Abstract

A method of color correction which matches color printouts to the color monitors used to view the image and the criteria used to develop the method are presented. This method will be contrasted with alternative matching methods, such as tristimulus match. The tristimulus match maps in-gamut colors to the closest color available on the output device. If the color is out-of-gamut, then an algorithm (such as maintain luminance, hue, or saturation) is used to choose a color. When an image changes color in a smooth manner, the in-gamut colors match very closely, and the out-of-gamut colors are pushed to some compromise color. The transition from in-gamut to out-of-gamut color is readily apparent. If the in-gamut colors are adjusted to a less optimal match, the out-of-gamut colors can then be given a better match, providing a smooth transition between in- and out-of-gamut colors. The method presented gives a more pleasing color match than a tristimulus match, if the image to be matched includes colors which are both in-gamut and out-of-gamut for the output device, and is especially useful if the output device has a small color gamut.

Citation Download Citation

Randall G. Guay "Method of color correction which preserves perceived color differences", Proc. SPIE 1670, Color Hard Copy and Graphic Arts, (1 May 1992); https://doi.org/10.1117/12.2322244

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KEYWORDS

Printing

Graphic arts

Space operations

Algorithm development

Computing systems

RGB color model

Standards development

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