Figure 2
From: Early stage dental caries detection using near infrared spatial frequency domain imaging
AC images at (a) 0.05 \(\hbox {mm}^{-1}\), (b) 0.2 \(\hbox {mm}^{-1}\) and (c) 0.5 \(\hbox {mm}^{-1}\). (d) Combining these three data-sets into a single RGB image allows easy distinction between enamel (yellow), dentin (red) and damaged tissue (black). Damage may be due to caries such as those shown in Fig. 3 or caused during extraction, such as that shown here.
