[vtkusers] How to downsample a volume with vtkVolume16Reader?

[David Gobbi]

Use vtkImageShrink3D, it is the only VTK filter that provides antialiased
image downsampling.  Either that, or you can use vtkImageGaussianBlur
(for antialiasing) followed by either vtkImageResample or vtkImageReslice
(for downsampling).  The vtkImageShrink3D approach is much faster, though.

 - David

--
  David Gobbi, MSc                       dgobbi at irus.rri.ca
  Advanced Imaging Research Group
  Robarts Research Institute, University of Western Ontario

On Wed, 13 Jun 2001, Rene Tschirley wrote:

> Dear all,
>
>
> Do I have a chance to downsample a 256*256*60 volume while reading with
> vtkVolume16Reader or directly after reading? vtkMarchingCubes takes quite
> a long time to create an isosurface and for developing my application, a
> high resolution is not needed. Anyway, I don't like to create another set
> of downsampled image files and would like to rescale the volume in my
> pipeline.
>
>
> Bye,
> 	René
>
>