Automatic segmentation by the method of interval fusion with preference aggregation when recognizing weld defects

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Abstract

Quality control of welding is usually carried out during the visual inspection process and is highly dependent on an operator experience. In the paper, it is proposed an approach to automatic detection and classification of a defective region, where segmentation of the analyzed photographic image of a weld (i.e., its division into defective and defect-free regions) is performed using the region growing procedure. The starting points for this procedure are selected by the authors' robust method of interval fusion with preference aggregation (IF&PA) on the base of image histogram analysis. Testing of the proposed approach for real life photographic images showed its ability to detect different types of weld defects with higher accuracy compared to traditional methods such as Otsu method and k-means.

About the authors

S. V Muravyov

Tomsk Polytechnic University

Email: muravyov@tpu.ru
Tomsk, Russia

D. C Nguyen

Tomsk Polytechnic University

Email: nguyen@tpu.ru
Tomsk, Russia

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