An automatic system of classification of weld defects in radiographic images

Edward, 1993, Inspection of welded joints, vol. 6, 1081 Sofia M, Redouane D. Shapes recognition system applied to the non-destructive testing. In: 8th European conference on non-destructive testing (ECNDT 2002), Barcelona; 2002. Vieira, 2008, Characterization of welding defects by fractal analysis of ultrasonic signals, Chaos Solitons Fractals, 38, 748, 10.1016/j.chaos.2007.01.012 Da Silva RR, Siqueira MH, Caloba LP, Da Silva I, De Carvalho A, Rebello JM. Contribution to the development of a radiographic inspection automated system. In: 8th European conference on non-destructive testing (ECNDT 2002), Barcelona; 17–21 June 2002. Da Silva RR, Caloba LP, Siqueira MH, Rebello JM. Pattern recognition of weld defects detected by radiographic test. NDT&E Int 37(6) (2004) 461–70. Da Silva, 2005, Estimated accuracy of classification of defects detected in welded joints by radiographic tests, NDT&E Int, 38, 335, 10.1016/j.ndteint.2004.10.007 Liao, 2004, Fuzzy reasoning based automatic inspection of radiographic welds: weld recognition, J Intelligent Manuf, 15, 69, 10.1023/B:JIMS.0000010076.56537.07 Shafeek, 2004, Automatic inspection of gas pipeline welding defects using an expert vision system, NDT&E Int, 37, 301, 10.1016/j.ndteint.2003.10.004 Lim, 2007, Automatic classification of weld defects using simulated data and an mlp neural network, Insight: Non-Destr Test Cond Monitor, 49, 154, 10.1784/insi.2007.49.3.154 Soo, 2008, Segmentation of weld defects in radiographs using rank-levelling and background subtraction, Insight: Non-Destr Test Cond Monitor, 50, 188, 10.1784/insi.2008.50.4.188 Mirapeix J, García-Allende PB, Cobo A, Conde OM, López JM. Real-time arc-welding defect detection and classification with principal component analysis and artificial neural networks. NDT&E Int 40, (2007) 315–23. Wang, 2002, Automatic identification of different types of welding defects in radiographic images, NDT&E Int, 35, 519, 10.1016/S0963-8695(02)00025-7 Mery D, Berti MA. Automatic detection of welding defects using texture features. In: International symposium on computed tomography and image processing for industrial radiology, Berlin; 2003. Zscherpel U. Film digitisation systems for dir: standards, requirements, archiving and printing 5 (05) 〈NDT.net〉 〈http://www.ndt.net〉 (May 2000). Zscherpel U. A new computer based concept for digital radiographic reference images 7 (12) 〈NDT.net〉 〈http://www.ndt.net〉 (November 2002). 〈http://www.umax.com〉. Lim, 1990 Otsu, 1979, A threshold selection meted from gray-level histograms, IEEE Trans Syst Man Cybern, 9, 62, 10.1109/TSMC.1979.4310076 Haralick, 1992, vol. 1 Widrow B, Hoff M. Adaptive switching circuits. In: 1960 IRE WESCON convention record, New York IRE; 1960. p. 96–104. MacKay, 1992, Bayesian interpolation, Neural Comp, 4, 415, 10.1162/neco.1992.4.3.415 Foresee, 1997, Gauss–Newton approximation to Bayesian regularization, 1930