I think the best results will actually come from using the vtkProjectedTetrahedraMapper - <a href="http://www.vtk.org/doc/release/5.0/html/a01919.html">http://www.vtk.org/doc/release/5.0/html/a01919.html</a><br><br>I've pretty much tried them all. The vtkVolumeRayCastMapper took about an hour to generate an image for me, the vtkFixedPointRayCastMapper cut it down to about 30 minutes. The vtkProjectedTetrahedraMapper takes the cake, however, at a whopping 5 minutes. Unfortunately, it does take alot more memory as it requires you to "tetrahedralize" your mesh.
<br><br><div><span class="gmail_quote">On 2/6/06, <b class="gmail_sendername"><a href="mailto:flin@enders.tch.harvard.edu">flin@enders.tch.harvard.edu</a></b> <<a href="mailto:flin@enders.tch.harvard.edu">flin@enders.tch.harvard.edu
</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hello all,<br><br>I need some advice on how much imporvement the<br>vtkFixedPointVolumeRayCastMapper will make vs. regular
<br>vtkVolumeRayCastMapper ? I'm doing volume rendering of roughly<br>250x80x150 voxels, and the speed is unacceptable. Any suggestions on how<br>to speed up? Specifically, how to use hardware to accelerate it?<br><br>
Thanks.<br><br>/faith<br><br><br>_______________________________________________<br>This is the private VTK discussion list.<br>Please keep messages on-topic. Check the FAQ at: <a href="http://www.vtk.org/Wiki/VTK_FAQ">http://www.vtk.org/Wiki/VTK_FAQ
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<br>Visualization Scientist, <br>ERDC-MSRC Vicksburg, MS<br>Homepage: <a href="http://www.yeraze.com">http://www.yeraze.com</a>