Figure 4
From: Bone morphological feature extraction for customized bone plate design
Skeleton-like structure of the undersurface of the eagle-shaped plate: (a) topological relations between feature curves: ① BI_0 type, ② BI_11 type, ③ BI_21 type, ④ II_0 type, ⑤ II_11 type, ⑥ II_12 type, and ⑦ II_13 type. (b) undersurface, (c) boundary feature curve, and (d) ridge curves and costal curves.
