[Insight-users] calculate normal

[rashedk]

Thanks! 

What is TMeshTraits in itk::SimplexMesh< TPixelType, VDimension, TMeshTraits
> ??

What should I pass for TMeshTraits? 




Leila Baghdadi-2 wrote:
> 
> check InsightApplication/DeformableModel...
> 
> I think that code needs work but I am sure I have the part where it
> converts the mesh to pass to vtk.
> 
> HTH
> 
> Leila
> 
> On Wed, 2008-20-02 at 09:21 -0800, rashedk wrote:
>> 
>> Thanks, but now I am stuck trying to display a simplex mesh in VTK. How
>> do I
>> visualize this mesh? Is there also a way to iterate through every point
>> on
>> the mesh?  
>> 
>> Rashed. 
>> 
>> 
>> Leila Baghdadi-2 wrote:
>> > 
>> > Yep that's right and another note,
>> > 
>> > you "must" create a triangle mesh in order to create a simplex mesh!
>> > 
>> > If you are unsure about how it is done, check the paper 
>> > simplex mesh
>> > by herve delingette of INRIA france
>> > 
>> > good luck
>> > 
>> > Leila
>> > 
>> > On Wed, 2008-20-02 at 12:47 +0100, Iván Macía wrote:
>> >> Hi Rashed,
>> >> 
>> >> You can do what you mention with VTK or directly in ITK use
>> >> itk::BinaryMask3DMeshSource, which is the equivalent of Marching Cubes
>> in
>> >> ITK. As the name implies, you need a binary mask (segmentation) as
>> input.
>> >> 
>> >> HTH
>> >> 
>> >> Ivan
>> >> 
>> >> -----Mensaje original-----
>> >> De: insight-users-bounces+imacia=vicomtech.org at itk.org
>> >> [mailto:insight-users-bounces+imacia=vicomtech.org at itk.org] En nombre
>> de
>> >> rashedk
>> >> Enviado el: miércoles, 20 de febrero de 2008 12:06
>> >> Para: insight-users at itk.org
>> >> Asunto: Re: [Insight-users] calculate normal
>> >> 
>> >> 
>> >> Hi, 
>> >> 
>> >> How do I convert my 3D image data to a simplex mesh in order to
>> compute
>> >> the
>> >> normals? Checking the class documentation for itk::SimplexMesh reveals
>> >> that
>> >> one has to generate a triangle mesh and then use the
>> >> itkTriangleMeshToSimplexMeshFilter. But then how do I convert my 3D
>> image
>> >> data to a triangle mesh?? Do I use vtkContour to produce polyData and
>> >> then
>> >> convert it to itkMesh using appropriate filters? 
>> >> 
>> >> Any help will be appreciated, 
>> >> 
>> >> Thanks
>> >> Rashed 
>> >> 
>> >> 
>> >> 
>> >> Luis Ibanez wrote:
>> >> > 
>> >> > Hi Tony,
>> >> > 
>> >> > 
>> >> > Well.... if you only have a point, then there is no normal to
>> compute.
>> >> > 
>> >> > You probably are thinking of a point from a surface, where a point
>> >> > belongs to several faces and have other points as neighbors.
>> >> > 
>> >> > 
>> >> > In that case you may want to look at the itk::SimplexMesh
>> >> > http://www.itk.org/Insight/Doxygen/html/classitk_1_1SimplexMesh.html
>> >> > 
>> >> > and its "ComputeNormal" method:
>> >> >
>> >>
>> http://www.itk.org/Insight/Doxygen/html/classitk_1_1SimplexMesh.html#itk_1_1
>> >> SimplexMesha5
>> >> > 
>> >> > 
>> >> >     Regards,
>> >> > 
>> >> > 
>> >> >        Luis
>> >> > 
>> >> > 
>> >> > -------------------
>> >> > tony hakki wrote:
>> >> >> Is it possible to calculate normal of a point in ITK? If yes, Could
>> >> you 
>> >> >> tell which class should be used?
>> >> >> thank you
>> >> >>  
>> >> >> 
>> >> > _______________________________________________
>> >> > Insight-users mailing list
>> >> > Insight-users at itk.org
>> >> > http://www.itk.org/mailman/listinfo/insight-users
>> >> > 
>> >> > 
>> >> 
>> > 
>> > _______________________________________________
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>> > Insight-users at itk.org
>> > http://www.itk.org/mailman/listinfo/insight-users
>> > 
>> > 
>> 
> 
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