Patent ID: 6987567
Filing Date: 2006-01-17
Classification: G01J

Abstract:
1. A color evaluation method for evaluating precision of color matching of an evaluation color with respect to a target color, comprising: a calculation step of calculating a difference between spectral distribution data of the evaluation color and spectral distribution data of the target color; a first acquisition step of acquiring first weighting data calculated from the spectral distribution data of the target color; a second acquisition step of acquiring second weighting data calculated from spectral distribution data of a light source; and an evaluation step of calculating an evaluation value used to evaluate the precision of color matching of the evaluation color with respect to the target color using the difference between the spectral distribution data, and the first and second weighting data, wherein said calculation step includes a difference step of calculating differences between spectral reflectance characteristics of the evaluation and target values for respective wavelengths, and wherein said evaluation step includes a step of applying the first and second weighting data to the differences for respective wavelengths calculated in said difference step, calculating a sum total of the differences, and using the sum total as the evaluation value.