[vtkusers] vtkKWEGPUVolumeRayCastMapper: How to improve the quality of the volume Rendering?

[AGPX]

Hi,

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.

My two cents,

- AGPX



________________________________
Da: "wassim_belhadj at topnet.tn" <wassim_belhadj at topnet.tn>
A: vtkedge at vtkedge.org
Cc: vtkusers at vtk.org
Inviato: Martedì 3 febbraio 2009, 9:33:22
Oggetto: [vtkusers] vtkKWEGPUVolumeRayCastMapper: How to improve the quality of the volume Rendering?


Dear list,

I tested the new vtkKWEGPUVolumeRayCastMapper provided by VTKEdge and I was
disappointed by the result obtained.

Before the released of VTKEdge, I used the vtkVolumeRayCastMapper provided
by Vtk. 

I had an excellent result (graphics rendering ) but a bad interaction
(slow).

I hoped to resolve this problem with the use of the new mapper of
VTKEdge(vtkKWEGPUVolumeRayCastMapper) but 

I got a bad volume rendering with  a Good interection.

I used the example provided with sources of VTKEdge :

GPURenderDemo -DICOM "<directory>" -CT_Bone 


How to improve the quality of the volume Rendering  using
vtkKWEGPUVolumeRayCastMapper?

Is there a setting to do?


My system configuration:

- Windows XP SP3;
- Visual Studio 2005 SP1;
- CPU: QuadCore Intel Core 2 Extreme QX9550 (2.83 Ghz) - FSB 1600 Mhz;
- GPU: NVidia Geforce  9800 GTX+  
- RAM: 3 GB

THank you in advance
Best Regards,
BELHADJ wassim

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