Objective evaluation for wrinkle appearance of fabrics by image processing and slit beam projecting technique

摘要

The slit beam projecting technique combined with the image processing is used, and three-dimensional image of the wrinkle of fabrics is obtained by the method, in which there is no influence on the results from the colors and the patterns of fabrics, and the fabric wrinkles can be evaluated and analyzed objectively. The parameters, such as standard deviation of height values of surface profiles, increasing ratio of surface area, one of surface length, and fractal dimension of surface, are defined and suggested to evaluate and characterize the fabric wrinkles. There are logarithm relationships between the parameters and the wrinkle grades of standard replicas, and their correlations are high, too. There is a good agreement between the subjective appraisal and the objective evaluation results for the fabrics.