<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:tahoma,new york,times,serif;font-size:10pt"><div style="font-family: tahoma,new york,times,serif; font-size: 10pt;">Hi,<br><br>What did you mean for "bad quality"? I use vtkKWEGPUVolumeRayCastMapper daily and its rendering quality is not inferior to the software ray cast mapper provided by VTK. Actually, I have only discovered some rendering bug (deformation of the volume, look at my previous post for more info and videos) and another potential bug when you set up clipping planes (although I'm pretty sure that this is a bug, I haven't posted this issue yet because I need to do more accurate test). I haven't tested the GPURenderDemo, but there are lots of settings that can influence the rendering quality like the sampling distance. Also a bad color/opacity transfer function can produce bad visual results. Check these parameters.<br><br>My two
cents,<br><br>- AGPX<br><br><div style="font-family: arial,helvetica,sans-serif; font-size: 13px;"><font face="Tahoma" size="2"><hr size="1"><b><span style="font-weight: bold;">Da:</span></b> "wassim_belhadj@topnet.tn" <wassim_belhadj@topnet.tn><br><b><span style="font-weight: bold;">A:</span></b> vtkedge@vtkedge.org<br><b><span style="font-weight: bold;">Cc:</span></b> vtkusers@vtk.org<br><b><span style="font-weight: bold;">Inviato:</span></b> Martedì 3 febbraio 2009, 9:33:22<br><b><span style="font-weight: bold;">Oggetto:</span></b> [vtkusers] vtkKWEGPUVolumeRayCastMapper: How to improve the quality of the volume Rendering?<br></font><br><br>Dear list,<br><br>I tested the new vtkKWEGPUVolumeRayCastMapper provided by VTKEdge and I was<br>disappointed by the result obtained.<br><br>Before the released of VTKEdge, I used the vtkVolumeRayCastMapper provided<br>by Vtk. <br><br>I had an excellent result (graphics rendering ) but a bad
interaction<br>(slow).<br><br>I hoped to resolve this problem with the use of the new mapper of<br>VTKEdge(vtkKWEGPUVolumeRayCastMapper) but <br><br>I got a bad volume rendering with a Good interection.<br><br>I used the example provided with sources of VTKEdge :<br><br>GPURenderDemo -DICOM "<directory>" -CT_Bone <br><br><br>How to improve the quality of the volume Rendering using<br>vtkKWEGPUVolumeRayCastMapper?<br><br>Is there a setting to do?<br><br><br>My system configuration:<br><br>- Windows XP SP3;<br>- Visual Studio 2005 SP1;<br>- CPU: QuadCore Intel Core 2 Extreme QX9550 (2.83 Ghz) - FSB 1600 Mhz;<br>- GPU: NVidia Geforce 9800 GTX+ <br>- RAM: 3 GB<br><br>THank you in advance<br>Best Regards,<br>BELHADJ wassim<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"
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