[vtkusers] interactively (visually) change Brightness and Contrast

[Anka Kochanowska]

Hi!
At some point I used vtkImageMapToWindowLevelColors to change brightness.
Window and level do not correspond exactly to brightness and color.

Anka



On Wed, Nov 7, 2012 at 4:08 AM, Alessandro <notinmyhead at gmail.com> wrote:

> Hi,
>
> I got your point. Mine is that I need to move the way user interact to
> change brightness and controll from the vtkInteractorStyleImage, so I'm
> looking for something that simply allows the modification on runtime. Is
> there something like that?
>
> Ale
>
> Il giorno 06/nov/2012, alle ore 16.52, David Doria ha scritto:
>
> > On Tue, Nov 6, 2012 at 10:43 AM, Alessandro <notinmyhead at gmail.com>
> wrote:
> > Hello,
> >
> > I'm wondering if there is way to interactively change brightness and
> contrast of an image displayed in render windows. I'd like to program it in
> a custom interactorstyle.
> >
> > Thanks
> > Ale
> >
> > vtkInteractorStyleImage already has some of that functionality:
> > http://www.vtk.org/Wiki/VTK/Examples/Cxx/Images/InteractWithImage
> >
> > You can subclass it (here is how:
> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Interaction/MouseEvents (that
> example does not use vtkInteractorStyleImage, but should give you the idea)
> ) to implement custom functionality.
> >
> > David
>
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