[vtkusers] How to turn off dithering while rendering?
Wolfram H Volpi
whv88240 at Bayou.UH.EDU
Sun Feb 18 15:24:37 EST 2001
I found how to stop the dithering:
On NT, from Controll-Pannel Display-Settings,
I changed the Color Palette to 16777216 Colors (it was 256).
On Sun, 18 Feb 2001, Wolfram H Volpi wrote:
> Hello everybody.
> I am rendering a small synthetic model and then saving the image.
> Apparently dithering is corrupting the pixel-colors of the image.
> But I need to compare two images without dithering.
> Is there a way to turn dithering off?
> Thank you,
> # vtk-tcl script.
> # ren1 is a vtkRenderer containing a synthetic model.
> # Synthetic.vtk and Synthetic.ppm are dithered images of the synthetic
> vtkRenderWindow renWin
> renWin AddRenderer ren1
> renWin SetSize 105 105
> renWin Render
> renWin SetFileName "Synthetic.ppm"
> renWin SaveImageAsPPM
> vtkPNMReader pReader
> pReader SetFileName "Synthetic.ppm"
> vtkImageCast imgCast
> imgCast SetOutputScalarTypeToUnsignedShort
> imgCast SetInput [pReader GetOutput]
> vtkStructuredPointsWriter sWriter
> sWriter SetInput [imgCast GetOutput]
> sWriter SetFileName "Synthetic.vtk"
> sWriter Update
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