Numerical and Graphical Presentation and Analysis of Two-Color Woven Fabrics with Different Color Models

Abstract

The aim of the research was the evaluation of some color models for numerical and graphical presentation of optical mixing on two-color surfaces. The analysis was carried out on two-colour woven fabrics with constant color in warp and five different colors in weft thread‘s system. Äs a reference a single-colour fabrics were also prepared and analysed in order to evaluate the influence of texture on spectrophotometrical values. Different fractions of color components were achieved with the changes of constructional parameters on woven surfaces. Theoretical tristimulus values were calculated with additive methods, including spectral/tristimulus values and fractions of color components. These values were used to present the theoretical and linear position of two-color structures between the color of warp and weft threads in different color models. Tristimulus values of two-color woven structures were also spectrophotometrically determined. The comparison of theoretical and spectrophotometrical spectral and tristimulus values was possible with the use of correlation methods and graphical presentation in xy diagram, u‘v‘ diagram and a*b* plane. Color differences ΔE00 between theoretical and measured tristimulus values were also calculated. In the results the objective analysis of different color models for evaluation of two-color woven structures was possible, which points out some adventages and disadventages of each color model.