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Figure 10: In vivo examinations of volunteer teeth (a) right side photothermal imaging (b) front side (c) left side (d) carious detection using Hilbert transform Algorithm. W1 shows volunteer photothermal imaging captured, w2 shows High carious contrast seen as the peak temperature intensity (Window 2). W3 illustrate The edge map produced by using two-dimensional Hilbert transform edge detection (Window 3). W4 shows The carious is detected by comparing the edge gradient to a defined threshold value. (Window 4) |
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