Patent ID: 7486818

Claim:
A color data accuracy calculation method comprising: using a computer, performing the steps of: extracting from a plurality of color signal pairs each including an input color signal in an input color space and a counterpart output color signal in an output color space, a target color signal pair including a target input color signal and a counterpart target output color signal in the output color space, which is to be calculated an accuracy thereof; extracting from the plurality of color signal pairs, a plurality of output vicinity color signals corresponding to a plurality of input vicinity color signals, which are located in the vicinity of the target input color signal in the input color space; and calculating a color signal pair accuracy of the target color signal pair on the basis of a relation between the target output color signal and the plurality of output vicinity color signals, wherein the calculating is calculating the color signal pair accuracy using a color signal statistical distance, which is a statistical distance between the target output color signal and the plurality of output vicinity color signals, and wherein the calculating is calculating the color signal pair accuracy using a monotone decreasing and smooth function of the color signal statistical distance.