[vtkusers] Can volume rendering be true color?

[Mark Wyszomierski]

Yes you can do this, I've rendered many color volumes using
vtkVolumeTextureMapper3D.

I wrote a small sample awhile ago which takes a series of color bitmaps and
volume renders it with VTK:

http://devsample.org/index.php?option=com_content&task=view&id=46&Itemid=27


Mark


2008/9/17 Vidyadhar N Kudalkar <vidyadhar at lucidindia.com>

>  Hi,
> I have not used such (four component) volumes but documentation indicates
> that vtkFixedPointVolumeRayCastMapper can handle such volumes. May be you
> can try that.
> HTH
> Vidyadhar
>
> ----- Original Message -----
> *From:* bluefishjj <bluefishjj at 126.com>
> *To:* vtkusers at vtk.org
> *Sent:* Wednesday, September 17, 2008 2:26 PM
> *Subject:* [vtkusers] Can volume rendering be true color?
>
> Hi all,
>
> Currently, I see only volume rendering with pseudo color mapping, the
> opacity and the color are set according to the scalar values
>
> Now I have a series of true color images, which are taken for an object at
> different focus positions, read into vtkJPEGReader, and each point in the
> data has 3 scalar
>
> components (vtkJPEGReader::GetOutput()->GetNumberOfScalarComponents() ==
> 3). I wonder whether there is a method to set only the opacity
>
> of the points in the data and perform the volume rendering to obtain a true
> color volume rendering objects.
>
>
> Thanks in advance!
>
>
>
>
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