CGAL users discussion list

[David Bernstein <>]

Hi Andreas, Thanks for your response.  I think perhaps that the part about 
the sphere surface is not right but the interior subdomain_index seems to be 
a real issue.

I'm setting the image data manually through function (a red flag I know, I 
checked it many times and as far as I can tell it's working correctly).  If I 
can write this to an inr file I'll send it to you.

Dave

On May 21, 2013, at 3:02 AM, Andreas Fabri 
<>
 wrote:

> 
> Hi David,
> 
> Is your post in the right thread?  I can't see sharp features
> in your spheres.
> 
> Can you provide the data set of the sphere, and the call
> to the mesh generator (plus the #includes and typedefs)
> so that we can try to reproduce and fix it.
> 
> The same for a multidomain segmented image.
> 
> best,
> 
> andreas
> 
> 
> On 21/05/2013 03:40, David Bernstein wrote:
>> 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>
>> 
>> 
>> 
>> --
>> View this message in context: 
>> http://cgal-discuss.949826.n4.nabble.com/3D-meshing-of-multidomain-segmented-images-with-sharp-features-tp4657504p4657522.html
>> Sent from the cgal-discuss mailing list archive at Nabble.com.
>> 
> 
> 
> -- 
> Andreas Fabri, PhD
> Chief Officer, GeometryFactory
> Editor, The CGAL Project
> 
> phone: +33.492.954.912    skype: andreas.fabri
> 
> -- 
> You are currently subscribed to cgal-discuss.
> To unsubscribe or access the archives, go to
> https://sympa.inria.fr/sympa/info/cgal-discuss
> 
> 


-- 
 

This e-mail contains privileged and confidential information intended for 
the use of the addressees named above. If you are not the intended 
recipient for this e-mail, you are hereby notified that you must not 
disseminate, copy or take action in respect of any information contained in 
it. If you have received this e-mail in error, please notify the sender 
immediately by e-mail and destroy this e-mail and its attachments.