Patent ID: 6529291
Filing Date: 2003-03-04
Classification: H04N

Abstract:
A color conversion apparatus comprising:a color conversion table designed to receive a plurality of color input signals of a first color space model and to output color signals in a second color space model, based on the inputted signals; a tone reproduction curve (TRC) table designed to input at least one input signal which is the same as at least one input signal of the color conversion table; a first weight, w1; a second weight, w2, wherein the first weight and the second weight are held in a relationship to each other of, w1+w2=x, wherein x is a predetermined value; a first multiplier in operative connection with the color conversion table, the first multiplier incorporating a first weight value of the first weight, wherein the outputs of the color conversion table are multiplied by the first weight value, generating weighted color conversion output signals; a second multiplier in operative connection with the TRC table, the second multiplier incorporating a second weight value of the second weight, wherein the output signal of the TRC table is multiplied by the second weight value, generating a weighted TRC output signal; and an adder in operative connection with the first multiplier and the second multiplier, wherein the weighted color conversion output signals and the weighted TRC output signal are combined to form an output used in an image rendering operation of an image rendering system.