[vtkusers] Pointer to pixels.

[Patrick de Koning]

Jordi Inglada wrote:
> 
> Hello all.
> 
> I am taking my first steps with Vtk. Since I have a considerable
> amount of code written by myself for image processing stuff, I would
> like to reuse it together with vtk. In order to do this I need to put
> the output of some image filters into, let's say, an array of
> floats. If aFilter->GetOutput() returns a pointer of type
> vtkImageData, how can I individually access the pixels?
> 
> Thanks.
> 
Use aFilter->GetOutput()->GetScalarPointer() to get a void pointer to
the first element of the array, then just cast to float if the imagedata
is float.

> --
> Jordi Inglada
> CNES - Centre Spatial de Toulouse
> DSO/OT/QTIS/SR - BPI 811
> 18, avenue Edouard Belin
> 31401 Toulouse Cedex 04 - France
> Tel. +33.(0)5.61.27.33.97 - Fax. +33.(0)5.61.28.31.09
> 
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-- 
--------------------------------------------------------------------
Ir. P.J.H. de Koning                    Leiden University Medical Center
Department of Radiology, C2S            Division of Image Processing
P.O. Box 9600                           2300 RC  LEIDEN
the Netherlands                         Tel. +31-71-5266206  
Fax +31-71-5266801                      Email patrick at lkeb.azl.nl