Abstract The purpose of this study was to determine the amount of perceived shift in color and color coordinates of quenched polyamid fiberes under different illuminants using 6 different light sources, standard illuminant D55, D65 (daylight), A (incandescent lamp), and F1, F2 (fluorescent lamp). The diffuse spectral reflectance values were measured by a spectrophotometer using 0/diffuse geometry CIE Lab color system under six different illuminants (D55,D65,C,A,F1 and F2) has been computed. Color parameters, including luminance factor, dominant wavelength and purity were calculated for the samples Relation between the optical data of spectro-photometric parameters with different annealing conditions are given. A computer model has been developed at the NIS to determine the colour data from the spectrophotometric.
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