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Instrumentalna metoda oceny pillingu płaskich wyrobów włókienniczych
(Wydawnictwo Politechniki Łódzkiej, 2012) Jasińska, Izabela
Instrumental method of pilling assessment is based on computer processing and analysis of the images of textile fabric samples. The principle of method consists in taking an image of fabric sample under defined conditions of machine vision scene, performing an image processing operation using RGB channel’s mix algorithm, making an image segmentation and calculating the value of the degree of surface filling by pilling. The degree of surface filling by pilling is the ratio of surface area occupied by the pilling to the total surface area of the sample. This paper presents the construction of a measuring stand and the procedure for pilling measurement using instrumental method. Then the qualitative model of the method was defined and potential factors, which may influence the measurement results, were identified and examined. These factors include adjusting parameters of measuring stand and environmental conditions. Furthermore, the metrological characteristics analysis of instrumental method was conducted as regards discrimination threshold and sensitivity. The analysis of adequacy of both instrumental and standard, organoleptic method shows that the test results obtained with both methods are closely correlated.