[vtkusers] UnstructuredGrid to ImageData?

[Amy Squillacote]

Yes, create a volume (basically a cube, but the dimensions for the 3 
axes do not have to be the same) using a vtkImageData. You'll need to 
fill in the origin, extents, and spacing for the vtkImageData you're 
using to probe your vtkUnstructuredGrid.

- Amy

At 09:10 AM 8/9/2005, laurent.paul at club-internet.fr wrote:

>Hi Amy,
>
>First thanks for your very quick answer!
>
>Because I didn't know I could get a volume probing my 
>unstructuredGrid with... something. That's exactly what I need!
>I use a 3D format (analyze) and if it's possible, I'd want to probe 
>the unstructuredgrid to produce a single file Volume.
>Have I to probe my data with a cube or something like that?
>
>Laurent.
>
>----Message d'origine----
> >Date: Tue, 09 Aug 2005 08:58:46 -0400
> >A: laurent.paul at club-internet.fr, vtkusers at vtk.org
> >De: Amy Squillacote <amy.squillacote at kitware.com>
> >Sujet: Re: [vtkusers] UnstructuredGrid to ImageData?
> >
> >For your vtkProbeFilter solution, why not create a 3D vtkImageData (a
> >volume) instead of several single slices?  Then you only have to
> >probe once.  You can still save out the vtkImageData as a series of
> >images if that's the format you need for passing your data to ITK.
> >(Take a look at the subclasses of vtkImageWriter.)
> >
> >- Amy
> >
> >At 08:47 AM 8/9/2005, laurent.paul at club-internet.fr wrote:
> >
> >>Hi users,
> >>
> >>I 've got a little problem and two solutions but I think (hope)
> >>there is something better.
> >>I've got a volume (vtkImageData) that I clip with a plane
> >>(vtkClipVolume + vtkPlane).
> >>I know this clipper produces UnstructuredGrid. I'd want to write the
> >>clipped volume in a file to use it as input to a registration
> >>program based on ITK.
> >>I can clip the volume but don't know which format I can use to write it.
> >>My two solutions are:
> >>- I can use a vtkXMLWriter and modify my ITK program to make it
> >>accept XML (with XMLReader).
> >>- The other solution is to use vtkProbeFilter with a plane to
> >>"interpolate" images at each plane position.
> >>The second solution seems to be tedious since, I think, I will have
> >>to place the plane, save the result of probing filter, move the
> >>plane, save the result ... and so on.
> >>The first one is pretty good but it would be great if someone tells me:
> >>"but you can save your unstructuredgrid as imageData using ..... filter"
> >>I think it's almost impossible, but never knows....
> >>
> >>Thanks,
> >>
> >>Laurent.
> >>
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