Three-dimensional shape modeling for distance education

This paper proposes a topologically robust and accurate shape modeling procedure to prepare materials for distance learning. The procedure approximates a real 3D object based not on the recently used so-called ICP (Iterative Closed Point) algorithm or the Delaunay triangulation for noise resistive reconstruction. An easy-to-manipulate geometric model with desired meshing, not limited to a triangular one, but also organized and matrix-formatted quadrilateral, hexagonal or n-gonal mesh, is directly reconstructed based on a solid modeling approach. The radial distance of each scanning point is measured using a laser triangulation sensor. The mesh connectivity is assigned and conserved throughout the process. Examples of archeological replicas and stone specimens are demonstrated.