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[David Bernstein <>]

Here's an example of something I've been encountering.  The image has voxels
set to one value in the interior of a small sphere (the sphere is a few
dozen voxels in diameter) and another value outside.  The mesh appears to be
ok except many of the elements on the sphere surface and inside the sphere
have the subdomain index set to the wrong value.  Oddly this happens in some
cases (consistently in this one) and not others.

For instance, if I make the image smaller but with same size voxels and same
size sphere, the mesh is fine.  (This case has about 12 million voxels, the
small case where it works has about 1 million).

Dave
<http://cgal-discuss.949826.n4.nabble.com/file/n4657522/tmp1.png> 
<http://cgal-discuss.949826.n4.nabble.com/file/n4657522/tmp2.png> 



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