Automatic Inspection of Woven Fabric Density Based on Digital Image Analysis

Abstract

In order to inspect woven fabric density automatically, a method combining image processing and multiscale\r wavelet transform is proposed in this paper. Firstly, fabric images are pre-processed by Bimodal\r Gaussian function histogram equalization to obtain more structure information. Secondly, fabric images\r are decomposed into horizontal and vertical sub-images by using wavelet filter. Thirdly, texture features\r are extracted from the sub-images through binarization and smooth processing. Finally, density of yarns\r is acquired accurately after analyzing features of warps and wefts of the fabric. The experiment results\r prove that the proposed algorithm is perfectly suitable for three principle weaves and the relative error\r of automatic inspection compared with manual inspection is less than 0.86%.