[ITK-users] FEMRegistration

[Martin Genet]

Dear all:

Trying to use FEMRegistration on a bunch of images. Still trying to 
figure out the following:

  - What is the simplest way to convert an external mesh (e.g., 
vtkUnstructuredGrid, or GMSH) into an FEMObject (for registration), and 
vice versa (for post-treatment, vizualization)?

  - If the mesh covers only a subset of the image, what happens to the 
rest of the image?

Any help would be super appreciated. Sorry if that's too trivial. Thanks 
in advance.

Martin