[vtkusers] MassProperties in micrometer

[David Gobbi]

Yes, if you want to compute volumes then you must set the DataSpacing.  Do
you know the correct spacing for these images?

If you set the spacing in millimetres, then VTK will compute the volume in
mm^3.  If you set the spacing in kilometres, it will compute the volume in
km^3.

 - David


On Thu, Jan 7, 2016 at 5:29 PM, eduardo <eduardo.hssi at gmail.com> wrote:

> Hello,
> I am creating a volume as an image stack as the code:
>
> reader = vtk.vtkPNGReader ()
> reader.SetFilePrefix (path)
> reader.SetFilePattern (pattern)
> reader.SetFileNameSliceOffset (0)
> reader.SetFileNameSliceSpacing (1)
> reader.SetDataSpacing (1, 1, 1)
> reader.SetDataOrigin (0, 0, 0)
> reader.SetDataExtent (0, 499, 0, 499, 1 70)
>
> With MassProperties and MachingCubes recover the volume. How to recover the
> volume measure micrometer or millimeter?
>
> Would be setting the parameter SetDataSpacing?
>
> thank you
>
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