In order to quickly and accurately evaluate the curling condition of weft-knitted fabrics,a digital image processing method was designed.The horizontal digital projection of the fabric before and after curling was analyzed,and the degree of curling of the fabric by subtracting the ratio of after and before curling from 100％was characterized.Specifically,the fabric to be evaluated for curling was horizontally relaxed for 4 hours under constant temperature conditions,and a circular sample was taken with a fabric picker.The digital image was obtained by scanning with a scanner,and Photoshop software was used to perform pixel statistics on the image.Each pixel represented a unit area in the digital image,and the number of pixels represented the size of the area.Eight samples were tested twice one week before and after,the results shows that the method can accurately quantify the curling of the fabric,has high repeatability,is easy to operate,which can provide assistance for curling study.
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