Hi Belhadj, Volume rendering is a resource intensive task. MITK is making use of the volume rendering classes provided by VTK. For compatibility reasons we had up to now only used the standard methods, without 3D-GPU acceleration. Recent versions of VTK include more advanced (and faster) options for volume rendering. If you like to try these out, you are welcome to experiment with the class mitk::VolumeDataVtkMapper3D, which is our encapsulating mapper for volume rendering. As a first step, you could simply exchange the instantiation of m_HiResMapper with a new / more advanced sub-class of vtkVolumeMapper.
Note that MITK also supports Level-of-Detail rendering to speed up interaction. The volume is rendered at a low resolution during interaction, and at higher detail levels when the interaction finishes. Note that interaction *during* volume rendering is executing is currently only supported on an experimental level. To turn this on, go to "Options" --> "Global options" and enable "LOD abort mechanism (experimental)" -- this may in several cases however lead to an instable system. Regards, Mathias -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Monday, November 10, 2008 5:15 PM To: [email protected] Subject: [mitk-users] Volume Rendering: Interactionsand updating Scene arenot fast Importance: High Dear I am using Mitk + VTK5.0.2 + ITK3.8.0 + Qt4.4.3 to test Interaction on Volume Rendering. This is my Machine Configuration : Pentium 4 , 3.00GHZ 1,00 Go de RAM The interaction with the volume works perfectly when Data Sets are small or not zoomed. In fact,interactions and updates to the scene become slow when I zommed the volume ( i used Pic3D.pic.gz data sets). I even noticed that the CPU is 100% of its resources when volume is expanded and i try to interact with it (rotate ,...) I had this same problem using VTK that I couldn't resolve... Does any one encountered these problems? Thank you in davance Best Regards, BELHADJ Wassim ------------------------------------------------------------------------ - This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ mitk-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mitk-users ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ mitk-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mitk-users
