[vtkusers] enhancing contrast of VTK image

[Prathamesh Kulkarni]

Hello VTK users,

I wish to enhance the contrast and/or adjust the brightness of an image
rendered using VTK. After looking at the previous posts, I could not find a
class in VTK which can help with that.

Could someone please point me to the right direction?

Thanks,
Prathamesh
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