Coordinating color produced by two devices--using a hue-controll

Computer graphics processing and selective visual display system – Computer graphics processing – Graph generating

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345150, G06T 1140

Patent

active

061280224

ABSTRACT:
Device-space color specifications for two color-presentation devices are interrelated through the intermediary of at least one perceptual color space. This interrelation is performed by either tabulations or real-time software processing, and in such a way that color, and color changes, specified in relation to one device--in a control language of that device--are tracked in both the language and the actual performance of the other device. This mapping through perceptual space can be used to produce the effect of matching the two device gamuts to each other, so that the full gamuts of both are in effect merged. When so used, this new kind of mapping preserves relative positions in color space--and thus the capability of the tracking device to maintain distinctions between colors seen on the source/input device that appear very closely similar. Such discrimination between adjacent colors can be supported essentially throughout the gamut of both devices and in particular even very near the lightness extrema and maximum-saturation point on a hue page. A related technique of merging two- or three-dimensional color elements can be used either to implement the new mapping, or for very different purposes such as converting colors from perceptual into machine space.

REFERENCES:
patent: 4941038 (1990-07-01), Walowit
patent: 5377024 (1994-12-01), Dillinger
patent: 5883632 (1999-03-01), Dillinger
Robertson, "Visualizing Color Gamuts: A User Interface for the Effective Use of Perceptual Color Spaces in Data Displays", pp. 50-64, Sep. 1988.

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