Patent ID: 6181445
Filing Date: 2001-01-30
Classification: H04N

Abstract:
A method for deriving color space transformations for a color image reproduction system comprising an input device and an output device, wherein said output device has an output-device gamut including colors capable of being rendered by said output device, said method comprises:obtaining a first transformation for said input device that maps from colors within an input-device-dependent color space to colors within a first device-independent color space, andobtaining a normalization transformation that normalizes all color data information in said first device-independent color space with respect to a white point in a second device-independent color space, wherein x.sub.0,y.sub.0,z.sub.0 is the maximum value for the coordinates in said first device-independent color space and wherein said normalization transformation is obtained by varying the values of the x.sub.0,y.sub.0,z.sub.0 coordinates.