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http://dx.doi.org/10.6109/JKIICE.2009.13.5.944

Detection of Defects on Welding Area Using Image Processing  

Kim, Eun-Seok (목포해양대학교)
Joo, Ki-See (목포해양대학교)
Jang, Bog-Ju (목포해양대학교)
Kang, Kyeang-Yeong (목포해양대학교)
Abstract
In this paper, we use image processing algorithms to detect the defects existed on a welding area automatically. It is difficult to detect the welding defects because it is sensitive to lights and has irregular patterns. For this reason, images are captured with 2 kinds of illumination condition, and are processed by 2 different algorithms for each image. The first algorithm separates some ROI's from the captured image and compares the similarity of intensity between each divided region. The second algorithm extracts boundary information from the processed image by the first algorithm, and calculates the length of boundary, curvature and base line area based on boundary information. The proposed method showed high performance in detection and classification of defects.
Keywords
용접결함;경계검출;영역분할;명암도분포;
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