Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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USING THE METHOD OF CALCULATION COLOR DIFFERENCESTO ASSESS CHANGES PAINT SHEEPSKIN SEMI-FINISHED PRODUCTS

Borisova Е.N. 1 Koytova J.Y. 1
1 Kostroma State Technological University
Color fastness of clothing materials is an important indicator of clothing aesthetic properties’ safety. Existing methods for assessing ofcolor fastness of clothing materials to various influences do not provide a quantitative assessment of the extent and significance of materialcolorchange from the point of view of human perception. This paper presents a method for assessing of clothing materials color change, based on the processing of scanned photographic images of samples before and after the exploitation impact. Color difference indexΔE is calculated using the Lab-characteristics of CIE Lab color space. The evaluation ofdiscoloration of the leather of sheepskin showed that the proposed method allows to quantify changes of color characteristics, makes it possible to evaluate the significance of human-readable color change,being more sensitive and accurate. It was revealed that the various effects (dry cleaning, weathering, dry and wet friction) lead to different changes of color parameters (lightness, saturation and hue), which is estimated by the magnitude and sign of these characteristics.