Hi, <br /><br /> <div id="sig_upper"> </div>for label images you should set your <a href="http://www.vtk.org/doc/nightly/html/classvtkVolumeRayCastCompositeFunction.html" class="el">vtkVolumeRayCastCompositeFunction</a> to <a href="http://www.vtk.org/doc/nightly/html/classvtkVolumeRayCastCompositeFunction.html#a83d88132f67dde95ef3f2c91384c24b8" class="el">SetCompositeMethodToClassifyFirst</a>() if you haven't already. <br />However I am not sure if linear interpolation will work with label volumes. Might be that you will have to resort back to "nearest" interpolation. To make it look less "edgy" you could try upping the Multisample rate for antialasing in the vtkRenderWindow class and play around with sample distance in volumemapper for more precise sampling. <br /><br /><br />Best Regards,<br />Frable<br /> <br /> <div class="noTransl">Quoting <strong>Emma Saunders <a href="mailto:emmasaunders123@gmail.com"><emmasaunders123@gmail.com></a></strong>:</div> <blockquote style="border-left: 1px solid #cccccc; margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex"><style type="text/css">
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</style>Hi thanks for the reply, when I try that however the render has lots of colours mixed up but its simply a labelled segmented volume, any ideas ?<br /> <br /> <div>On Mon, Feb 4, 2013 at 10:52 PM, Frable <span dir="ltr"><<a href="mailto:zemitis.janis@inbox.lv">zemitis.janis@inbox.lv</a>></span> wrote:<br /> <blockquote style="border-left: 1px solid #cccccc; margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex"> In your vtkVolumeProperty the default setting is to use nearest neighbor<br /> interpolation. Change that to linear.<br /> <br /> ->SetInterpolationTypeToLinear();<br /> <br /> That should smooth it out a bit.<br /> <br /> <br /> <br /> --<br /> View this message in context: <a target="_blank" href="http://vtk.1045678.n5.nabble.com/volume-render-image-quality-shading-tp5718281p5718284.html">http://vtk.1045678.n5.nabble.com/volume-render-image-quality-shading-tp5718281p5718284.html</a><br /> Sent from the VTK - Users mailing list archive at Nabble.com.<br /> _______________________________________________<br /> Powered by <a target="_blank" href="http://www.kitware.com">www.kitware.com</a><br /> <br /> Visit other Kitware open-source projects at <a target="_blank" href="http://www.kitware.com/opensource/opensource.html">http://www.kitware.com/opensource/opensource.html</a><br /> <br /> Please keep messages on-topic and check the VTK FAQ at: <a target="_blank" href="http://www.vtk.org/Wiki/VTK_FAQ">http://www.vtk.org/Wiki/VTK_FAQ</a><br /> <br /> Follow this link to subscribe/unsubscribe:<br /> <a target="_blank" href="http://www.vtk.org/mailman/listinfo/vtkusers">http://www.vtk.org/mailman/listinfo/vtkusers</a><br /> </blockquote></div><br /> </blockquote><br /> <div id="sig_lower"> </div>