[Insight-users] RE: [Insight-developers] icosahedron

[Luis Ibanez]

Hi Leila,

The itkRegularSphereMeshSource that Thomas contributed to ITK
starts with six points equidistant in a unit sphere.

I wonder if the first subdivision of that figure will give you
an icosahedron... (maybe not...)


In any case,
Do you really need an icosahedron ?
or just a simple figure to initialize a deformable surface ?



Also,
you may want to look at the recent paper in the Insight Journal:

http://www.insight-journal.org/InsightJournalManager/view_reviews.php?back=publications.php%3Fjournalid%3D6%26order%3Drating%26revision_display%3Dcombined&pubid=122

itkQuadEdgeMesh:
A Discrete Orientable 2-Manifold Data Structure for Image Processing

        http://hdl.handle.net/1926/306




    Regards,


       Luis



----------------------
Leila Baghdadi wrote:
> Hello Jim,
> 
> Thanks for the reply.
> 
> I am wondering if it is a good idea to actually create a cell topology
> class for icosahedron in itk, I guess itk only has TetrahedronCell.
> 
> Sylvain also mentioned that vtk has Platonic solids with the 5 solids
> including icosahedron however I am not sure if we have any code which
> can convert this to an itk mesh.
> 
> I am writing some code for brain segmentation and have to do this as
> part of my work, so I am just trying to determine what is the best
> strategy at this point.
> 
> any thoughts
> 
> Thanks again for your time
> 
> Leila
> 
> On Mon, 2006-18-09 at 14:08 -0400, Miller, James V (GE, Research) wrote:
> 
>>Leila,
>>
>>I thought the SphereMeshSource provided an icosahedron but looking at
>>the API, it looks more like spherical coordinates parameterization.
>>
>>I think http://insight-journal.org/dspace/handle/1926/215 has a
>>SphericalHarmonicMeshSource which generates an icosahedron.
>>
>>Jim 
>>
>>-----Original Message-----
>>From: insight-developers-bounces+millerjv=crd.ge.com at itk.org
>>[mailto:insight-developers-bounces+millerjv=crd.ge.com at itk.org] On
>>Behalf Of Leila Baghdadi
>>Sent: Monday, September 18, 2006 1:42 PM
>>To: ITK
>>Subject: [Insight-developers] icosahedron
>>
>>Hi everyone,
>>
>>Does anyone know if it is possible to create an icosahedron (20
>>triangles) with available itk mesh and cell topologies or do we need to
>>create a separate cell topology for this.
>>
>>Thanks
>>
>>Leila
>>
>>
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> 
> 
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