[vtkusers] Window and Level Question

[Paulo Henrique Junqueira Amorim]

Hi All,

My project uses the vtkImageActor to display the images. I need to change
the Window and Level at the time of display only, without changing the data.

I looked at the class vtkImageMapToWindowLevelColors but it changes the
image data.

Is there any way to change the Window and Level with vtkImageActor or the
vtkRenderer ?

Regards,
Paulo
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