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Crack detection algorithm for fluorescent magnetic particle inspection based on shape and texture features |
| MA Tao1, SUN Zhenguo1,2, CHEN Qiang1,2 |
1. Key Laboratory for Advanced Materials Processing Technology of Ministry of Education, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China;
2. Yangtze Delta Region Institute of Tsinghua University, Jiaxing 314006, China |
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Abstract This paper introduces an algorithm based on shape and texture features to recognize cracks from fluorescent magnetic particle inspection images. The algorithm detects ridge lines in the images that represent candidate cracks, extracts the local texture features of each ridge point using a scale-invariant feature transform (SIFT) descriptor, and averages those from the same line to form the texture features of the ridge line. A support vector machine classifier is then used to detect the cracks. Tests show that this algorithm more accurately distinguishes the cracks from non-defects than conventional shape-based algorithms or texture-based algorithms. The combined shape and local textures improve the crack detection accuracy.
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| Keywords
fluorescent magnetic particle inspection
image detection
texture feature
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Issue Date: 15 January 2018
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2018,
Vol. 58
