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An Algorithm for Detecting Seam Cracks in Steel Plates

Authors: Doo-chul Choi, Yong-Ju Jeon, Jong Pil Yun, Sung Wook Yun, Sang Woo Kim


In this study, we developed an algorithm for detecting seam cracks in a steel plate. Seam cracks are generated in the edge region of a steel plate. We used the Gabor filter and an adaptive double threshold method to detect them. To reduce the number of pseudo defects, features based on the shape of seam cracks were used. To evaluate the performance of the proposed algorithm, we tested 989 images with seam cracks and 9470 defect-free images. Experimental results show that the proposed algorithm is suitable for detecting seam cracks. However, it should be improved to increase the true positive rate.

Keywords: Defect detection, Gabor filter, machine vision, surface inspection.

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[1] J. P. Yun, S. H. Choi, B. Seo, and S. W. Kim, "Real-time vision-based defect inspection for high-speed steel products," Opt. Eng., 47(5), 2008, 077204, pp. 1-8.
[2] J. P. Yun, S. H. Choi, J. -W. Kim, and S. W. Kim, "Automatic detection of cracks in raw steel block using Gabor filter by univariate Dynamic Encoding Algorithm for Searches (uDEAS)," NDT&E International, 42, 2009, pp. 389-397.
[3] C. H. Park, S. H. Choi, and S. W. Won, "Vision-based inspection for periodic defects in steel wire rod production," Opt. Eng., 49(1), 2010, 017202, pp. 1-10.
[4] D. -c. Choi, Y. -J, Jeon, J. P. Yun, and S. W. Kim, "Pinhole detection in steel slab images using Gabor filter and morphological features," Applied Optics, 50 (26), 2011, pp. 5122-5129.
[5] A. Kumar, and G. K. H. Pang, "Defect detection in textured materials using Gabor filters," IEEE Trans. on Industry Applications, 38(2), 2002, pp. 425-440.
[6] D. Casasent, and J. S. Smokelin, "Real, imaginary, and clutter Gabor filter fusion for detection with reduced false alarms," Opt. Eng., 33(7), 1994, pp. 2255-2263.
[7] Q. Li, J. You, L. Zhang, and P. Bhattacharya, "Automated retinal vessel segmentation using Gabor filters and scale multiplication," Proc. International Conference on Image Processing, Computer Vision, and Pattern Recognition, USA, 22-28.