[vtkusers] vtkImageNormalize()

[Mathieu Malaterre]

Hi all,
  I am using vtkImageNormalize class. But then I want to save my image
to a file. I get the error message:
ERROR: In /shalom/data/mmalat/VTK_cvs/IO/vtkBMPWriter.cxx, line 110
vtkBMPWriter (0x8268700): PNMWriter only accepts unsigned char scalars!

So I tried vtkImageCast and then SetOutputScalarTypeToUnsignedChar().
But that doesn't work (the image is black, every pixels is 0). Does
anyone has any idea.
I also tried vtkImageMathematics and multiply but an arbitrary number
but I am not sure of what I'm doing.

Thanks a lot
mathieu
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