[Insight-users] multiple material marching cubes

[Bill Lorensen]

For most modalities, you should do a segmentation with more
sophisticated algorithms. Isosurface extraction using just a threshold
as a tissue discriminator is not sufficient I'm afraid. Have you tried
the cited method? Do they make software available to try their method
on your data? Otherwise, you don't know whether you'll have a similar
experience with their technique.

Bill

On Tue, Apr 8, 2008 at 4:37 PM, Prashanth
<prashanth.dumpuri at vanderbilt.edu> wrote:
> Bill,
>  Thanks for getting back to me. I have attached a pdf of the article and
> have also listed below details about the article (just in case the
> attachment does not go through).
>
> Multiple material marching cubes algorithm, Ziji Wu , John M. Sullivan Jr,
> Volume 58, Issue 2  , Pages 189 - 207, International Journal for Numerical
> Methods in Engineering.
>
> As for vtkImageMarchingCubes, I have not had success with it when trying to
> create more than one marching cubes surface. For eg., I have an image volume
> with a tumor in a human brain and I was trying to extract the tumor surface
> and the brain surface. The average intensity of the tumor tissue is around
> 100 (ranging from 1-200) and healthy brain tissue is anything with a
> non-zero intensity value (ranging from 1-500). So when I ask vtk's
> ImageMarchingCubes to extract tumor tissue with an isosurface value of 100,
> I still get the brain tissue and not tumor. I know I'm missing something
> here. Can you please point me in the right direction.
> Thanks
> Prashanth
>
>
>
> Bill Lorensen wrote:
> > vtkDiscreteMarchingCubes generates multiple surfaces from labelled
> > (segment) data. vtkMarchingCubes has always generated multiple
> > isosurfaces from continuous data.
> >
> > Can you post a pdf of the journal article (assuming it is not a closed
> > journal)? Or the name of the article. Hopefully the authors retained
> > their rights to their own intellectual property and havede posted a
> > copy (assuming they did not give up their rights to do so).
> >
> > Bill
> >
> >
> > On Tue, Apr 8, 2008 at 3:09 PM, Prashanth
> > <prashanth.dumpuri at vanderbilt.edu> wrote:
> >
> >
> > > All,
> > > Does ITK have an implementation of the multiple material marching cubes
> > > algorithm (International Journal of Numerical Methods in Engineering
> 2003;
> > > 58:189–207) ? By multiple material marching cubes, I mean creating
> > > contiguous 3D surfaces for as many materials(iso-surfaces) requested
> within
> > > a single sweep of an image volume.
> > > Thanks
> > > Prashanth
> > > _______________________________________________
> > > Insight-users mailing list
> > > Insight-users at itk.org
> > > http://www.itk.org/mailman/listinfo/insight-users
> > >
> > >
> > >
> >
>
>