Image Analysis of Standard Pilling Photographs Using Wavelet Reconstruction

Abstract

A new approach to pilling evaluation based on the wavelet reconstruction scheme using undecimated discrete wavelet transform (UDWT), which is shift-invariant and redundant, was investigated. A method of digital image analysis to attenuate the repetitive patterns of fabric surface and enhance the pills is presented. A preliminary evaluation of the proposed method was conducted to SM50 European standard pilling images. The results show that reconstructed resolution level, wavelet bases and subimage used for reconstruction can affect the segmentation of pills and thus pilling grading. The area ratio of pills to total image was effective as a pilling rating factor. The results suggest that the proposed method in this paper is applicable to the practical evaluation of pilling.

Image Analysis: Textile Industry in Indonesia

“…The collected data was tabulated by the content analysis, which focus on image analysis (Cohen, 1960;and Gottschalk, 2013): (Zhang & Bresee, 1995;and Wood, 1990);  Designs cloth (Zhang & Bresee, 1995;Xin, Hu, & Yan, 2002;and Rui-ling, Qing-Xiang, & Yu -he, 2005);  Fabric texture (Na & Pourdeyhimi, 1995);  Fabric structure (Kang, Choi, Kim, & Oh, 2001;Sakaguchi, Wen, Matsumoto, Toriumi & Kim, 2001;Jensen & Carstensen;and Escofet, Millán, & Rallo, 2001);  Strength of textile products (Xu, Pourdeyhimi, & Sobus, 1992;Kang, Choi, Kim, & Oh, 2001;and Jasper & Potlapalli, 1995); Price (Ting, 2015);  Quality fabrics (Sakaguchi, Wen, Matsumoto, Toriumi & Kim, 2001: Kim & Kang, 2005Xin, Hu & Baciu, 2010;Jensen & Carstensen, 2002;and Kang, Choi, Kim, & Oh, 2001);  Brand image (Bannister & Saunders, 1978).…”

“… Quality fabrics (Sakaguchi, Wen, Matsumoto, Toriumi & Kim, 2001: Kim & Kang, 2005Xin, Hu & Baciu, 2010;Jensen & Carstensen, 2002;and Kang, Choi, Kim, & Oh, 2001);…”

“…At the same time, Kim and Kang (2005) analyzed the image quality of the fabric by means of analyzing a segmentation pill (textile surface defects caused by wear and tear, and are considered unsightly), and using pills grading methods applicable for practical evaluation wavelet-based pilling and sub image.…”

Application of Wavelet Transform Method for Textile Material Feature Extraction

“…Each image was therefore divided into multiple non-overlapping regions for fabric texture/defect segmentation. Kim and Kang (2005) also evaluated fabric pilling based on the wavelet reconstruction scheme to attenuate the periodic background and enhance the pills using un-decimated discrete wavelet transform. Kim and Park (2006) conducted a further study on the quantification and evaluation of fabric pilling using twodimensional and three-dimensional hybrid imaging methods.…”

“…The multi-scale transform can effectively analyse the images at different scales of decomposition. For example, the wavelet transform measures the image brightness variations at different scales (Kim & Kang, 2005). It has been applied to objective pilling grading in recent studies.…”