Table 2.

Convergence of quantities derived from a medial model as the resolution of the model is refined. Each row represents a level of subdivision. Levels 1,2 and 3 are compared to level 4, which is the highest-resolution level, in terms of φ, R, |∇mR| and b. For each of these quantities, the mean and maximum difference are averaged over 30 hippocampus models.

			Difference With Finest Model
Levels of Resolution			Phi		Radius		|GradR|		Boundary
Level	Vertices	Triangles	Mean	Max	Mean	Max	Mean	Max	Mean	Max
1	853	1584	0.599	2.068	0.106	0.401	0.043	0.262	0.108	0.409
2	3289	6336	0.267	0.891	0.048	0.194	0.021	0.150	0.046	0.195
3	12913	25344	0.090	0.293	0.017	0.067	0.008	0.067	0.015	0.066
4	51169	101376