Figure 2

Mesh objects and curvature maps. Untextured 3D mesh object surfaces of plasticine models containing an abrasion (A top) and a patterned laceration (B top). At each vertex, mean curvature is mapped to a color (A bottom, B bottom; mean curvature values see color legend). Convex regions range from green (flat) to red (strongly convex) and concave regions from green to violet (strongly concave). Flat regions exhibiting a curvature magnitude below 0.17are dark gray and excluded from further evaluation. Ridges, grooves and shape configurations can be visually checked to be distinct for both 3D mesh objects now.