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Defect Identification and Classification for Digital X-Ray Images

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Abstract:

Radiography inspection (X-ray or gamma ray) is one of the most commonly used Non-destructive Evaluation (NDE) methods. More and more digital X-ray imaging is used for medical diagnosis, security screening, or industrial inspection, which is important for e-manufacturing. In this paper, we firstly introduced an automatic welding defect inspection system for X-ray image evaluation, defect image database and applications of Artificial Neural Networks (ANNs) for NDE. Then, feature extraction and selection methods are used for defect representation. Seven categories of geometric features were defined and selected to represent characteristics of different kinds of welding defect. Finally, a feed-forward backpropagation neural network is implemented for the purpose of defect classification. The performance of the proposed methods are tested and discussed.

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Info:

Periodical:

Applied Mechanics and Materials (Volumes 10-12)

Pages:

543-547

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.10-12.543

Citation:

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Online since:

December 2007

Authors:

Ying Yin, G.Y. Tian, Guo Fu Yin, A.M. Luo

Keywords:

Artificial Neural Network (ANN), Defect Identification, Image Segmentation, Non-Destructive Evaluation (NDE)

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Сopyright:

© 2008 Trans Tech Publications Ltd. All Rights Reserved

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References

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