Spotting defects more clearly: radiographic image enhancement

Spotting defects more clearly: radiographic image enhancement

Examination of the radiograph in Figure 1 and the gray level profile in Figure 2 shows that the image is low contrast, high noise, and the background is not uniform. The defects are all quite small and their positions are random. These factors make defect detection difficult, so it is necessary to e...

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Veröffentlicht in:Industrial Heating 2006-01, Vol.73 (1), p.48-51
Hauptverfasser: Wang, Xin, Wong, Brian Stephen, Tui, Chen Guan
Format: Magazinearticle
Sprache:eng
Schlagworte:
Analysis
Comparative analysis
Defects
Digital imaging
Gamma rays
Histograms
Neighborhoods
Noise
Nondestructive testing
Radiography
Studies
Wavelet transforms
Welding
X-rays
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Zusammenfassung:Examination of the radiograph in Figure 1 and the gray level profile in Figure 2 shows that the image is low contrast, high noise, and the background is not uniform. The defects are all quite small and their positions are random. These factors make defect detection difficult, so it is necessary to enhance the contrast and reduce the noise before defect recognition.
ISSN:0019-8374
2328-7403