Figure 3

Two sizes of ROIs in the cephalometric X-ray. (a) ROIs with 256 × 256 and 512 × 512 size were extracted by landmarks. (b) Sella, nasion, and menton requiring a small ROI with 256 × 256 size (red), and (c) hinge, corpus and Md6 root requiring a wide ROI with 512 × 512 size (blue).