Method and system for displaying colors utilizing tristimulus values
Method for the reproduction of originals which, with respect to their color content, are scanned according to a tristimulus method
Color reproduction system
Apparatus for converting digital chrominance signals of a cartesian color coordinate system into digital color signals and saturation signals of a polar color coordinate system and a transformation circuit
Display processor with color matrixing circuitry and two map memories storing chrominance-only data
Method of detecting principal subject images and determining exposures in color printing Patent #: 4769695
ApplicationNo. 07/113029 filed on 10/26/1987
US Classes:345/591, Color processing in perceptual color space345/604, Color space transformation (e.g., RGB to YUV)358/518Color correction
ExaminersPrimary: Paschall, Mark H.
Assistant: Wysocki, Jonathan
Attorney, Agent or Firm
International ClassesG09G 5/02 (20060101)
H04N 9/64 (20060101)
AbstractA method and apparatus for reversibly transforming color, which is selected from a gamut of colors producible by the primaries of a color display device (20), into a perceptually uniform color space. The coordinates of the color space are readily convertible into internationally accepted standards for color measurement. Also provided, is a method for transforming the color space coordinates of a selected color into the corresponding relative primary intensity levels of the display device (20).