Image processor for output devices which transforms data into ac

Details Image processor for output devices which transforms data into ac Image processor for output devices which transforms data into ac

1991-03-06

1995-10-31

Coles, Sr., Edward L.

Facsimile and static presentation processing

Natural color facsimile

Color correction

358515, 358518, H04N 146, G03F 308

Patent

active

054634806

ABSTRACT:
A method and apparatus for processing data representing an image in a first color space suitable for controlling a first image output device. The apparatus comprises a processor (11, 14, 17) for reversibly transforming the image into a perceptual color space defined by lightness, colorfulness and hue components, and for modifying the lightness, colorfulness and hue components of the image in accordance with a predetermined algorithm so that all colors in the image fall within the gamut of a second image output device; and a store for storing data defining the modified and unmodified lightness, colorfulness and hue components.

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Robertson, Philip K., "Visualizing Color Gamuts: A User Interface for the Effective Use of Perceptual Color Spaces in Data Displays", IEEE Computer Graphics and Applications, Sep. 1988, pp. 50-64.
Patent Abstracts of Japan, vol. 13, No. 381, Aug. 23, 1989, JP 1-130691.

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