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Some vtkCutter and vtkVoxelContoursToSurfaceFilter test example should tell the story well.<BR>
<BR>Xiaofeng<BR><BR><BR> <BR>> Date: Tue, 4 May 2010 17:12:31 +0100<BR>> Subject: Re: [vtkusers] Fwd: Re: RE: Create an approximate cross-section of a RT ROI<BR>> From: jothybasu@gmail.com<BR>> To: xf10036@hotmail.com<BR>> CC: lars-friedrich@gmx.net; vtkusers@vtk.org<BR>> <BR>> Hi Guys,<BR>> <BR>> You seems to be creating some dicom RT viewer, are you importing RT<BR>> structs into your applications and converting into 3D meshes. If yes,<BR>> could some one give me the steps involved in that, maybe some<BR>> flowchart type ( or if you don't mind, the function in any language).<BR>> After some time I might have to do this , so if anyone can give me<BR>> some guidance so my life will be easier :).<BR>> <BR>> Thanks,<BR>> <BR>> Jothy<BR>> <BR>> On Tue, May 4, 2010 at 4:59 PM, Xiaofeng Z <xf10036@hotmail.com> wrote:<BR>> > Thanks for the information. I may revisit this later. Maybe I did<BR>> > something wrong that causes the performance issue.<BR>> ><BR>> > I use a dual Xeon computer. Although I have eight processing cores, the<BR>> > speed of each core is not very fast (2GHz).<BR>> ><BR>> > Another reason I am not using vtkVoxelContoursToSurfaceFilter is that it<BR>> > requires contours with integer vertices while dicom RT contour points can be<BR>> > off voxel centers. I wonder what do you do to make sure you don't loss<BR>> > resolution.<BR>> ><BR>> > Thanks!<BR>> ><BR>> > Xiaofeng<BR>> ><BR>> ><BR>> ><BR>> >> Date: Tue, 4 May 2010 17:50:37 +0200<BR>> >> From: lars-friedrich@gmx.net<BR>> >> Subject: Re: RE: [vtkusers] Fwd: Re: RE: Create an approximate<BR>> >> cross-section of a RT ROI<BR>> >> To: xf10036@hotmail.com; vtkusers@vtk.org<BR>> >><BR>> >> No, using a 'modern' PC is usually sufficient, all keeps flowing when a<BR>> >> user interactively modifies the cut plane (although 3 planes are cut<BR>> >> simultaneously and a 3D scene is updated as well). In our case we usually<BR>> >> represent the 3D structures with transparency; as we update the 3D scene as<BR>> >> well this makes the application sometimes a bit stuttering. But as I<BR>> >> understand your plan you do not have to update any 3D scene during cutting.<BR>> >> The cutting is really fast.<BR>> >><BR>> >> lars<BR>> >><BR>> >> -------- Original-Nachricht --------<BR>> >> > Datum: Tue, 4 May 2010 11:12:05 -0400<BR>> >> > Von: Xiaofeng Z <xf10036@hotmail.com><BR>> >> > An: lars-friedrich@gmx.net, VTK <vtkusers@vtk.org><BR>> >> > Betreff: RE: [vtkusers] Fwd: Re: RE: Create an approximate cross-section<BR>> >> > of a RT ROI<BR>> >><BR>> >> ><BR>> >> > Lars,<BR>> >> ><BR>> >> ><BR>> >> ><BR>> >> > Is there any noticable lagging at all?<BR>> >> ><BR>> >> ><BR>> >> ><BR>> >> > Thanks!<BR>> >> > Xiaofeng<BR>> >> ><BR>> >> ><BR>> >> ><BR>> >> > > Date: Tue, 4 May 2010 16:34:24 +0200<BR>> >> > > From: lars-friedrich@gmx.net<BR>> >> > > To: vtkusers@vtk.org<BR>> >> > > Subject: [vtkusers] Fwd: Re: RE: Create an approximate cross-section<BR>> >> > > of<BR>> >> > a RT ROI<BR>> >> > ><BR>> >> > ><BR>> >> > > Xiaofeng,<BR>> >> > ><BR>> >> > > I use a quite comparable approach for the same purpose as you, I<BR>> >> > > guess:<BR>> >> > I cut multiple (!) 3D RT structures in 3 orthogonal planes<BR>> >> > simultaneously<BR>> >> > and cut the referenced RT volume (CT) at the same time. The structures<BR>> >> > include quite complex anatomy such as the skeletons with many vertices.<BR>> >> > > In my implementation (and that is nothing more than I wrote in the<BR>> >> > morning) this works 'very' interactively. For me that is real-time<BR>> >> > enough ;)<BR>> >> > ><BR>> >> > > regards,<BR>> >> > ><BR>> >> > > lars<BR>> >> > ><BR>> >> > ><BR>> >> > > -------- Original-Nachricht --------<BR>> >> > > > Datum: Tue, 4 May 2010 09:37:22 -0400<BR>> >> > > > Von: Xiaofeng Z <xf10036@hotmail.com><BR>> >> > > > An: lars-friedrich@gmx.net<BR>> >> > > > Betreff: RE: [vtkusers] Create an approximate cross-section of a RT<BR>> >> > ROI<BR>> >> > ><BR>> >> > > ><BR>> >> > > > lars,<BR>> >> > > ><BR>> >> > > ><BR>> >> > > ><BR>> >> > > > I consider the method you described a more accurate way to do it.<BR>> >> > > > Unfortunately, vtkCutter is too slow to be used in real time.<BR>> >> > > ><BR>> >> > > ><BR>> >> > > ><BR>> >> > > > Thanks for your reply though!<BR>> >> > > ><BR>> >> > > > Xiaofeng<BR>> >> > > ><BR>> >> > > ><BR>> >> > > ><BR>> >> > > > > Date: Tue, 4 May 2010 07:55:33 +0200<BR>> >> > > > > From: lars-friedrich@gmx.net<BR>> >> > > > > Subject: Re: [vtkusers] Create an approximate cross-section of a<BR>> >> > > > > RT<BR>> >> > ROI<BR>> >> > > > > To: xf10036@hotmail.com; vtkusers@vtk.org<BR>> >> > > > ><BR>> >> > > > > Hi Xiaofeng,<BR>> >> > > > ><BR>> >> > > > > just an idea:<BR>> >> > > > > - produce a surface from the axial contours by using<BR>> >> > > > vtkVoxelContoursToSurfaceFilter (which works quite well provided<BR>> >> > > > your<BR>> >> > source contours are<BR>> >> > > > evenly distributed)<BR>> >> > > > > - take vtkCutter(s) with plane implicit functions that define your<BR>> >> > new<BR>> >> > > > contouring orientation(s) and cut the volume to produce new contours<BR>> >> > from<BR>> >> > > > that directions<BR>> >> > > > ><BR>> >> > > > > HTH,<BR>> >> > > > > lars<BR>> >> > > > ><BR>> >> > > > ><BR>> >> > > > > -------- Original-Nachricht --------<BR>> >> > > > > > Datum: Mon, 3 May 2010 20:12:22 -0400<BR>> >> > > > > > Von: Xiaofeng Z <xf10036@hotmail.com><BR>> >> > > > > > An: VTK <vtkusers@vtk.org><BR>> >> > > > > > Betreff: [vtkusers] Create an approximate cross-section of a RT<BR>> >> > ROI<BR>> >> > > > ><BR>> >> > > > > ><BR>> >> > > > > > Hi vtkUsers,<BR>> >> > > > > ><BR>> >> > > > > > I have a set of contours in axial orientation representing a<BR>> >> > > > > > ROI.<BR>> >> > I<BR>> >> > > > need<BR>> >> > > > > > to sketch the ROI in coronal and sagittal plane, by connection<BR>> >> > > > > > the<BR>> >> > > > points<BR>> >> > > > > > made from the intersection of the contours and the cutting<BR>> >> > > > > > plane.<BR>> >> > Is<BR>> >> > > > there<BR>> >> > > > > > a function to do that in vtk or in ITK?<BR>> >> > > > > ><BR>> >> > > > > > I know the result is not "precise" in a sense that the contours<BR>> >> > make<BR>> >> > > > this<BR>> >> > > > > > way is not always consistent between themselves. But it seemed<BR>> >> > > > > > to<BR>> >> > be<BR>> >> > > > the<BR>> >> > > > > > only viable way to sketch a ROI in a multi-planar rendering in<BR>> >> > real<BR>> >> > > > time.<BR>> >> > > > > ><BR>> >> > > > > > Many thanks!<BR>> >> > > > > > Xiaofeng<BR>> >> > > > > ><BR>> >> > > > > ><BR>> >> > > > > ><BR>> >> > > > > ><BR>> >> > > > > ><BR>> >> > > > > > _________________________________________________________________<BR>> >> > > > > > The New Busy is not the old busy. Search, chat and e-mail from<BR>> >> > your<BR>> >> > > > inbox.<BR>> >> > > > > ><BR>> >> > > ><BR>> >> ><BR>> >> > http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_3<BR>> >> > > > ><BR>> >> > > > > --<BR>> >> > > > > GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!<BR>> >> > > > > Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01<BR>> >> > > ><BR>> >> > > > _________________________________________________________________<BR>> >> > > > Hotmail is redefining busy with tools for the New Busy. Get more<BR>> >> > > > from<BR>> >> > your<BR>> >> > > > inbox.<BR>> >> > > ><BR>> >> ><BR>> >> > http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_2<BR>> >> > ><BR>> >> > > --<BR>> >> > > GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!<BR>> >> > > Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01<BR>> >> > ><BR>> >> > > --<BR>> >> > > GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!<BR>> >> > > Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01<BR>> >> > > _______________________________________________<BR>> >> > > Powered by www.kitware.com<BR>> >> > ><BR>> >> > > Visit other Kitware open-source projects at<BR>> >> > http://www.kitware.com/opensource/opensource.html<BR>> >> > ><BR>> >> > > Please keep messages on-topic and check the VTK FAQ at:<BR>> >> > http://www.vtk.org/Wiki/VTK_FAQ<BR>> >> > ><BR>> >> > > Follow this link to subscribe/unsubscribe:<BR>> >> > > http://www.vtk.org/mailman/listinfo/vtkusers<BR>> >> ><BR>> >> > _________________________________________________________________<BR>> >> > The New Busy is not the old busy. Search, chat and e-mail from your<BR>> >> > inbox.<BR>> >> ><BR>> >> > http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_3<BR>> >><BR>> >> --<BR>> >> GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT!<BR>> >> Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01<BR>> ><BR>> > ________________________________<BR>> > Hotmail has tools for the New Busy. Search, chat and e-mail from your inbox.<BR>> > Learn more.<BR>> > _______________________________________________<BR>> > Powered by www.kitware.com<BR>> ><BR>> > Visit other Kitware open-source projects at<BR>> > http://www.kitware.com/opensource/opensource.html<BR>> ><BR>> > Please keep messages on-topic and check the VTK FAQ at:<BR>> > http://www.vtk.org/Wiki/VTK_FAQ<BR>> ><BR>> > Follow this link to subscribe/unsubscribe:<BR>> > http://www.vtk.org/mailman/listinfo/vtkusers<BR>> ><BR>> ><BR> <br /><hr />Hotmail has tools for the New Busy. 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