CGAL users discussion list

[Dominik Szczerba <>]

Smoothing labeled medical image data is not straight forward.
I have similar problems. They are somewhat resolved by requesting
bigger elements, but then some smaller features inside are lost...
Would be very helpful to get some examples how the mesh
optimization/smoothing parameters affect the outcomes.
Best regards,
Dominik

On Thu, Sep 9, 2010 at 3:37 PM, Michal Parusinski
<>
 wrote:
> I haven't really looked I am just suggesting ideas. You can smooth the
> mesh or you can smooth the original image. CGAL offers options for
> smoothing when generating 3d mesh generation, but it depends what kind
> of smoothing you want to get :
>
> http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Mesh_3/Chapter_main.html
>
> You can also try a Laplacian smoothing on the resulting mesh. However
> I never implemented something like that myself, so I can't help in
> doing so. And you can also try a Gaussian smoothing on the original
> image.
>
> On 9 September 2010 14:32, Hulusi Acikgoz 
> <>
>  wrote:
>> Thanks for the reply,
>>
>> I don't know how to do that,
>> This a .ima file that I've converted to analyze file.
>> Do you think that the original image is not enough smooth
>>
>>
>> 2010/9/9 Michal Parusinski 
>> <>
>>>
>>> Can you try to smooth the image before giving it to CGAL meshing?
>>>
>>> On 9 September 2010 14:17, Hulusi 
>>> <>
>>>  wrote:
>>> >
>>> > Hi,
>>> >
>>> > I am using the mesh_3D_image to have a 3D tetrahedral mesh  from a
>>> > segmented
>>> > 3D image. The size of the image is 150x256x256 and the size of the
>>> > woxels is
>>> > 1.047mm x 1.047mm x 1mm.
>>> > The mesh criteria are (30;3;3) for the facets and (3;5) for the mesh
>>> > cells.
>>> >
>>> > Howewer, I have a problem of smoothness of the surface (see attached
>>> > file).
>>> >
>>> > Do you have any idea about this?
>>> >
>>> > http://cgal-discuss.949826.n4.nabble.com/file/n2532835/tete_Enfant.png
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>>
>>
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