Defect detection in magnetic tile images based on stationary wavelet transform

A novel approach using stationary wavelet transform (SWT) is proposed for automatically detecting low-contrast defects under various light conditions in magnetic tile images. In this method, the uneven background was removed by Sobel operation. Then the index low-pass filtering and the nonlinear enh...

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Veröffentlicht in:	NDT & E international : independent nondestructive testing and evaluation 2016-10, Vol.83, p.78-87
Hauptverfasser:	Yang, Chengli, Liu, Peiyong, Yin, Guofu, Jiang, Honghai, Li, Xueqin
Format:	Artikel
Sprache:	eng
Schlagworte:	Algorithms Defect detection Defects Filtering Filtration Image detection Machine vision Machine vision based system Magnetic tile Nondestructive testing Stationary wavelet transform Wavelet transforms
Online-Zugang:	Volltext
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