correlation between scanner response and cie tristimulus values

in this study, a relationship between scanner response (rgb) and cie tristimulus values (xyz) is established by regression technique with different polynomials for colored polyester fabrics. the results showed that the transformation process is material dependent and higher order polynomials will fit the experimental data better than lower polynomials. the results also showed that the way the colors are chosen for primary calibration samples is more important than the number of samples. using calibration samples with color characteristics closer to unknown samples leads to better results.