slicing volumes

[David Gobbi]

Hi John,

It's definitely vtkImageClip that you want to use here.  There
is virually zero overhead involved in using a vtkImageClip
to extract an image slice.

You might find that VTK is more sluggish working with X
slices than with Y or Z slices.  There is no easy way around
this.  When you extract an X slice, the filter (or imager)
immediately after vtkImageClip has to deal with highly
discontiguous data.

 - David

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

On Mon, 23 Aug 1999, John Biddiscombe wrote:

> Dear All,
> 
> To slice a volume along the axes with no resamplig or interpolation, just a
> simple extraction of slices, should one
> 
> vtkImageReslice (seems a bit overkill)
> SP->GeometryFilter (don't want polygons output)
> vtkImageClip (I think I want this one)
> 
> is ImageClip the one I want or are there others that will do the job.
> 
> Thanks
> 
> John B
> 
> 
> 
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