Figure 7.

2D analog of neighbor search algorithm. Neighbor voxels are evaluated with increasing distance to the central voxel within the search radius r _search (blue circle). The square Euclidian distances between the central voxel and neighbor voxel are given in voxel units. (a) A core type voxel (light blue) is located within the search radius; therefore, the central voxel is assigned the shell volume type (light green). (b) There are no core type voxels within the search radius; therefore, the central voxel is assigned the probe excluded void type (gray).