Issue 16

F. R. Renzetti et alii, Frattura ed Integrità Strutturale, 16 (2011) 43-51; DOI: 10.3221/IGF-ESIS.16.05 50 Figure 29 : Duplex heat-treated. Figure 30 : Energy 8 gray levels. Figure 31 : Energy 64 gray levels. Figure 32 : Entropy 8 gray levels. Figure 33 : Entropy 64 gray levels. Figure 34 : Mutual information 8 gray levels Figure 35 : Mutual information 64 gray levels. Figure 36 : Contrast 8 gray levels. Figure 37 : Contrast 64 gray levels. INDICATOR 8 gray levels 64 gray levels Min Max Min Max Energy 0,1843 1 0,1667 1 Entropy 0 4,9477 0 5,1699 Mutual Information -2,6615 0 -4,8712 0 Contrast 0 13,9444 0 1,0430e+03 Table 3 : Minimum and maximum values assumed by the indicators

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