[vtkusers] Re: [Insight-users] Streaming large datasets with itk-vtk

[Kevin H. Hobbs]

On Tue, 2007-01-16 at 12:01 +0100, Jesús Spí­nola wrote:
> So, if I use, for example, vtkDICOMImageReader instead of
> itk::ImageSeriesReader my new pipeline
> vtkDICOMImageReader -> vtkImageData -> vtkImageViewer2
> will be streamed or I have to put vtkImageDataStreamer in the
> pipeline? 

A couple of notes, 1. vtkDICOMImageReader is not as sophisticated as the
ITK DICOM reader. 2.  I don't think that the VTK image viewers request
only the data they need. I think that if your image really is gigantic,
then you should crop, (cut, clip, or whatever) it down to what you want
to display. 3. If you can't fit one copy of the image into memory, then
vtkImageDataStreamer will not help you. It streams the pipeline upstream
of it, but produces a whole image on output.

> if i have, where it's the right place for the streamer class? before
> vtkImageData or after? 

Typically one would place a vtkImageDataStreamer after a filter that
uses a large amount of memory.
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