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. 2018 Jun 25;47(8):20180099. doi: 10.1259/dmfr.20180099

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© 2018 The Authors. Published by the British Institute of Radiology

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Figure 1. — (a) Markings of the demineralized area from three raters in two cycles (six markings in total) and corresponding ground truth computed with STAPLE for a QLF image (left) and a digital photo (right) of an upper central incisor; (b) registration of QLF/DP pairs. From left to right: QLF images, QLF images with marked ground truth area (red), digital photographs, digital photographs with marked ground truth area (blue), deformed photographs, deformed photographs with deformed marked ground truth area (blue). DP, digital photographs; QLF, quantitative light-induced fluorescence; STAPLE, simultaneous truth and performance level estimation.