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. Author manuscript; available in PMC: 2012 Aug 13.
Published in final edited form as: Neuroimage. 2011 Feb 23;56(3):907–922. doi: 10.1016/j.neuroimage.2011.02.046

Fig. 2.

Fig. 2

Illustration of the directions of the applied displacements: sn is the normal vector; st is the surface tangent vector; and sAmax is the bisector of the largest neighbouring triangle.