n South African Computer Journal - Computerised assessment of the appearance of abraded fabric




As a continuation of our earlier research on automatic visual measurement methods of fabric quality features, here we present an automatic visual approach towards measuring another fabric quality feature, the feature being the durability of the fabric's visual appearance (DVA). This is a novel fabric quality feature, though a closely related quality feature is sometimes used for certain types of fabrics. DVA complements the presently frequently used fabric quality feature -namely abrasion resistance - without imposing prohibitive extra procedures into the standardised fabric assessment. the DVA describes the way the fabric's appearance changes during its mechanical lifetime. Effectively, it furnishes information on the portion of thefabric's mechanical lifetime for which the fabric remains visually (aesthetically) stable. In our paper we explain why the DVA is a useful fabric quality feature for the various players in the fabric trade and show how the measurement of a fabric's DVA relates to the measurement of abrasion resistance. We also present a possible implementation of the suggested assessment approach. the DVA of a fabric sample is calculated from images taken at different stages of abrasion testing. n the presented implementation certain brightness, colour and morphological features are calculated for each of these images and the acquired feature values are used to calculate the fabric's DVA.


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