[vtkusers] problem displaying 2D image(the image looks darker)

[Mark Wyszomierski]

Hmm yeah if you're visualizing a bitmap no window/level should be
necessary - I'll take a look at it later today,

Mark

On Nov 13, 2007 10:12 PM,  <m26404030 at john.petra.ac.id> wrote:
> thanx for the help Mark.. i have looked at it and i can change the
> 'brightness' of my display image with the function..
> but, the question is : how can i specify the value in those functions
> so that the display image looks exactly the same with the original one?
> i think maybe u have had some experiments with those functions(maybe u
> have tried it in vtkImageViewer).
>
> thanx again..
>
>
> Quoting Mark Wyszomierski <markww at gmail.com>:
>
> > Haven't looked at it in awhile but vtkImageMapper has two functions
> > SetColorWindow(), SetColorLevel() which probably do it.
> >
> > Mark
> >
> > On Nov 11, 2007 1:40 PM,  <m26404030 at john.petra.ac.id> wrote:
> >> thanx for the reply..
> >> yeah, i know that there is a function in which we can specify
> >> window/level value in vtkImageViewer.
> >> but, in my application i use the classes (vtkRenderWindow,
> >> vtkRenderer, vtkRenderWindowInteractor,vtkImageMapper, vtkActor2D) not
> >> only for displaying 2D image. so, i want to do all of the job with
> >> those classes.. =p
> >> can i specify the window/level value in another way??(not using
> >> vtkImageViewer)
> >>
> >> thanx a lot..
> >>
> >>
> >>
> >> Quoting Mark Wyszomierski <markww at gmail.com>:
> >>
> >> > Did you try using vtkImageViewer2 which encapsulates all of that?
> >> > There may be a window/level value set on the source pixel data making
> >> > it appear darker than what you're used to seeing?
> >> >
> >> > Mark
> >> >
> >> > On Nov 11, 2007 12:26 PM,  <m26404030 at john.petra.ac.id> wrote:
> >> >> hi all, i want to ask a question..
> >> >>
> >> >> i want to display a 2D bitmap image (.bmp)..
> >> >> i use vtkRenderWindow, vtkRenderer, vtkRenderWindowInteractor,
> >> >> vtkImageMapper, vtkActor2D, and also vtkBMPReader.
> >> >> i actually can display the image but the image looks darker than the
> >> >> original image. i dont know why.
> >> >> someone can tell me how to display the image correctly?
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