Objective assessment of pilling of nonwoven fabrics using the two dimensional discrete wavelet transform
Palmer, Stuart and Wang, Xungai 2005, Objective assessment of pilling of nonwoven fabrics using the two dimensional discrete wavelet transform, in 17th IMACS World Congress scientific computation, applied mathematics and simulation : Paris, France, July 11-15, 2005., International Association for Mathematics and Computers in Simulation (IMACS), New Brunswick, N.J..
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Fabric pilling is a serious problem for the apparel industry, causing an unsightly appearance and premature wear. Woolen products are particularly prone to pilling. Recently, a process for production of woolen nonwoven apparel fabrics has been commercialized in Australia, and may lead to new markets for Australian wool. However, the success of such nonwoven fabrics will partly rely on their propensity to pill. A key element in the control of fabric pilling is the evaluation of resistance to pilling by testing. Resistance to pilling is normally tested in the laboratory by processes that simulate accelerated wear, followed by a manual assessment of the degree of pilling by an expert based on a visual comparison of the sample to a set of test images. To bring more objectivity into the pilling rating process, a number of automated systems based on image analysis have been developed. The authors previously proposed a new method of image analysis based on the two-dimensional discrete wavelet transform to objectively measure the pilling intensity for woven fabrics. This paper presents preliminary work in extending this method to nonwoven fabrics.
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