Abstract: The computer color matching simulation needs to establish a color optics database for all the pigments, at first. The traditional database model adopts relative K&S value to establish database, but this approach causes a heavy workload and inflexible. This thesis analyzes the optical properties absorption coefficient K and scattering coefficient S of the pigment properties, then puts forward a new type of absolute K&S value for database establishment algorithm and verifies the accuracy of database model by combining the tristimulus values color matching algorithm. The experiment shows that the new database model can greatly reduce database establishment workload and solve variable titanium white recipe prediction problem, thus greatly improve the computer color matching system’s adaptability.

Key words: absolute K&S value, variable titanium white color matching, color matching database building, paint color matching, color matching simulation