[vtkusers] vtkImageWeightedSum and registering data

[Scott Johnson]

Hello,

 

I'm using vtk 5.4.2 on a windows platform.

 

I've got a number of DICOM series which are being read by
vtkDICOMImageReaders.  Now I need to register them and average the pixel
values.  For now I'm just adding translations to the origins and
connecting them to a vtkImageWeightedSum object.  The issue is that my
translations don't seem to have an effect.

 

I've tried connecting the vtkDICOMImageReader ->
vtkImageChangeInformation -> vtkImageWeightedSum and
vtkDICOMImageReader->vtkImageReslice->vtkImageWeightedSum.  Neither of
which worked. 

 

Looking at the source code for vtkImageWeightedSum, I guess it makes
sense because it is doing a voxel by voxel summing and not taking the
spatial location of the pixels into account.

 

Is there a way to do this in vtk or do I need to incorporate some itk?

 

Thanks

 

                                -- Scott

 

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