Signed distance from each point in dense target mesh to nearest point/surface on registered template mesh. Set as scalar in pointsetdata and visualize with SlicerSALT.
For first iteration try using KdTree to get point-to-point distances. May need to form new KdTree to represent sparse template rather than dense target.
Signed distance from each point in dense target mesh to nearest point/surface on registered template mesh. Set as scalar in pointsetdata and visualize with SlicerSALT.