Using the basic method of digital image processing, the texture feature of fabric needs to be represented by structure image. Feature extraction is a basic concept in computer vision and image processing. It refers to the use of computer to extract the basic information of the collected image, and the use of computer to see whether every point of the extracted image belongs to an image feature. The result of feature extraction is to divide the extracted points into different subsets, which are often isolated points, continuous curves or continuous regions [8]. Image feature extraction can be divided into two levels, one is the bottom level feature extraction, the other is the high level feature extraction.<br>
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