[ITK-users] Isosurface extraction with ITK

[Joël Schaerer]

Hi all,

I'm trying to perform isosurface extraction from a continuous map using 
ITK (no VTK). The closest match I've found is the BinaryMask3DMeshSource 
which performs the Marching Cubes on a binary mask.

Unfortunately this requires thresholding the input before meshing, which 
results in rough edges in the output mesh. VTK's marching cube filter 
allows setting a floating-point isosurface value and the resulting 
meshes are noticeably smoother.

Is there a better solution to this problem using ITK only? Is there any 
particular reason why the marching cubes algorithm is implemented 
differently in ITK and VTK?

Thanks!

joel

PS: A sample input image with the corresponding ITK and VTK meshes is 
available here: 
http://sd-33294.dedibox.fr/~joel/isosurface_extraction.tar.gz