[vtkusers] Scale Image Values to [0,1]

[David Doria]

On Thu, Sep 15, 2011 at 5:46 PM, HansAusBremen <hansausbremen at gmx.net>wrote:

> Hi everyone,
>
> I'm a vtk beginner and kind of despair of getting the values of an image to
> [0,1].
>
> I'm reading in a .raw-File with vtkImageReader, afterwards I want to do the
> Scaling so I can use vtkImageThreshold then (which still does not work the
> way i want it to either) to select a special range.
> Aftwerwards i do MarchingCubes (vtkMarchingCubes) to get a volume and
> render
> with the vtkRenderer after mapping with vtkPolyDataMapper and a vtkActor
> plus vtkProperty.
>
> I think I could use a LookUpTable but I'm not familiar with it in vtk.
>
> Thank you for responses.
> Hans
>

Did you look at vtkImageShiftScale? You'd have to compute the scale factor,
and then pass it to the filter with SetScale.

David
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