Patent ID: 6100999
Filing Date: 2000-08-08
Classification: H04N

Abstract:
A method for predicting color transfer characteristics so that an output value can be predicted from a prediction-source value by using a real data pair comprising a plurality of real input signal data from a color image input device or a color image output device and corresponding output signal data, comprising the steps of:setting up a relationship between said input signal and said output signal with a matrix so as to establish a linear combination containing a constant element;determining differences, by signal component, between predicted output values determined using said matrix from said plurality of real input signal data and a plurality of corresponding real output data;weighting said differences with a weight coefficient dependent on said prediction-source value;determining the elements of said matrix so as to minimize the sum of the squares of said weighted differences; anddetermining a predicted output value from said prediction-source value using said matrix.