[vtkusers] Re versing Color

[KS Jothybasu]

In vtkLookupTable. Are you using vtkLookupTable if not here is a part of the
code which might help you.

* # Create a greyscale lookup table
    table = vtk.vtkLookupTable()
    table.SetRange(grayscale) # image intensity range
    table.SetValueRange(1,0) # from black to white
    table.SetSaturationRange(0.0, 0.0) # no color saturation
    table.SetRampToSCurve()
    table.SetNumberOfTableValues(402)
    table.Build()

    # Map the image through the lookup table
    color = vtk.vtkImageMapToColors()
    color.SetLookupTable(table)
    color.SetInputConnection(reslice.GetOutputPort())

    # Display the image
    actor = vtk.vtkImageActor()
    actor.SetInput(color.GetOutput())
*
Jothy

On Fri, Jan 22, 2010 at 3:36 PM, circass <circass at gmail.com> wrote:

>
> Where should i use that function ?
> is there a specific filter or what ?
>
> Thanx
> Circass
>
>
> KS Jothybasu wrote:
> >
> > Could you please try SetValueRange(1,0).
> >
> > Regards
> >
> > Jothy
> >
> > On Fri, Jan 22, 2010 at 2:06 PM, circass <circass at gmail.com> wrote:
> >
> >>
> >> I think Alessandro understood me wrong, so i m trying to explain what i
> >> want
> >> more clearly.
> >>
> >> I have dicom files that i read with itk and vtk.
> >>
> >> my images are already greyscale, i want to change the blacks with whites
> >> and
> >> vice versa.
> >>
> >> Thanx.
> >> Circass
> >> --
> >> View this message in context:
> >> http://old.nabble.com/Reversing-Color-tp27272638p27273652.html
> >> Sent from the VTK - Users mailing list archive at Nabble.com.
> >>
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> --
> View this message in context:
> http://old.nabble.com/Reversing-Color-tp27272638p27275052.html
> Sent from the VTK - Users mailing list archive at Nabble.com.
>
> _______________________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Please keep messages on-topic and check the VTK FAQ at:
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