METHOD FOR COMPUTER-BASED DETERMINATION OF CHANGE IN COLOUR OF TEXTILE FABRIC WHEN ASSESSING RESISTANCE THEREOF TO PHYSICAL AND CHEMICAL ACTION Russian patent published in 2012 - IPC G01N33/36 

FIELD: physics.

SUBSTANCE: reference grey scales are scanned, thereby forming an electronic base of their contrast. A scanned computer image of samples of the analysed fabric is obtained in the RGB colour palette before and after exposure to physical and chemical factors, as well as the image of samples of adjacent fabric before and after exposure to these factors. Based on statistical distribution of intensity of colour components of points on the image, presence of foreign objects on the image of the analysed fabric samples and samples of adjacent fabric are detected and excluded from analysis. The difference between colour intensity of the analysed fabric samples and samples of the adjacent fabric before and after exposure to physical and chemical factors is determined. Analysis results are compared with images from the electronic base of contrast of reference grey scales, and change in colour is determined from lightening of the initial colour and change in colour purity using defined relationships.

EFFECT: high reliability and objectiveness of test results, high efficiency and information content.

4 cl, 8 tbl, 12 dwg