[Insight-users] Deformable registration using FEM: Visualize Mesh

[Luis Ibanez]

Hi Steve,

Option (A)

The original FEM code in ITK has a compile flag:

          FEM_BUILD_VISUALIZATION

but, given that Visualization was not in the scope of
ITK, this code has probably never been exercised.    :-(


Option (B)

You could use the filters that overlap a grid on an
image, and resample that grid image through the
deformation field computed by the FEM registration
method.

See
             Insight/Code/Review/
                           itkGridImageSource.h

and its explanation in the Insight Journal paper

            "Gridding Graphic Graticules"
            Tustison N., Avants B., Gee J.
            University of Pennsylvania
            http://hdl.handle.net/1926/475
http://www.insight-journal.org/browse/publication/140


-----

Regarding the process of creating a customized
Mesh:

        We don't have such functionality in ITK.

Mesh Generation is outside of the scope of ITK.

You will find very useful to look at:

http://www.na-mic.org/Wiki/index.php/NA-MIC_NCBC_Collaboration:Automated_FE_Mesh_Development

as a possible solution.

This is an Open Source application based
on ITK and VTK



     Regards,


               Luis



-------------------------------------------------------
On Mon, Feb 22, 2010 at 9:52 PM, Steve Lancey <steve.lancey at gmail.com> wrote:
> Hi,
>
> I have two questions:
>
> 1) I would like to store the generated mesh after every iteration of the
> energy minimization procedure and visualize them later (as a binary images
> or paths).
> What is the best way to achieve this?
>
> 2) What is the best tool to create a mesh manually, including the assignment
> of mesh element properties?
>
> Thanks for taking your time,
>
> Steve Lancey
>
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