[vtkusers] varying zspacing

[Grześ Furga]

Hi,

I'm using vtk to reconstruct surfaces from a set of slides. Most of
the time the slides maintain constant spacing
but occasionally a batch of oddly spaced ones comes.
I can use reslice / changeinformation to interpolate the constant
spacing batches and end up with a
set of volumes with matching z spacing.

Is there a way to merge / join the individual volumes into a continous
one before feeding into vtkContourFilter?

The only alternative solution I can think of is exporting the
interpolated chunks as scalararrays, joining them
and then building a continous volume.
I haven't tested it yet but I imagine doing something along the lines of:

image = vtk.vtkImageImport()
image.SetDataSpacing(xspacing, yspacing, zspacing );
image.SetImportVoidPointer(data)

# reslice / change information and export:

export = vtk.vtkImageExport()
export.SetInput(image.GetOutput())
export.SetExportVoidPointer(data)
export.Export()

Now data will be exported resliced, right? And I can join it with
other chunks to form a continues array of equally spaced
data and feed right into a vtkImageImport again?



-- 
Best Regards,
Grześ Furga