[vtkusers] Bypassing OpenGL Color Interpolation?

[Mark Wyszomierski]

the vtkImageViewer2 class displays vtkImageData on a textured quad
using hardware. There is a method for turning the interpolation
on/off. If you don't want to use that class directly maybe it can at
least show you how to disable the interpolation.

Mark

On 8/10/05, rywchiu <rywchiu at interchange.ubc.ca> wrote:
> Hi,
> 
> I'm trying to display a vtkImageData (using vtkDataSetMapper and vtkActor), but the image I get is quite blurry as a result of color interpolation. After looking through the mailing list, it seems that its a problem with OpenGL and using texture mapping could help bypass the problem.
> 
> I found the following thread that offers a solution:
> http://public.kitware.com/pipermail/vtkusers/2004-May/073632.html
> 
> However, I'm not completely sure how this works... Is there a way to create a multi-component image (containg RGB values rather than the scalar) and using that as the texture to map?
> 
> Has anyone had success with bypassing this problem? Any example code would greatly help...
> 
> Thanks,
> Rita
> 
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