Hi Roman, I'll really need to take a closer look to the data you sent, I'm planning to do it in the next few days. Thanks
Luca On Mar 4, 2013, at 1:54 PM, Dr. Roman Grothausmann wrote: > On 23/02/13 13:56, Luca Antiga wrote: >> Possible workarounds: >> >> 1. Try to use Tetgen to generate the internal Delaunay tessellation, instead >> of the default algorithm. This can be easily >> done by specifying -usetetgen 1 in the vmtkcenterlines command line > > Using tetgen I get an error and the resulting VTP-file is empty (second > workaround is still running): > > Reading VTK XML surface file. > Executing vmtkcenterlines ... > Cleaning surface. > Triangulating surface. > Computing centerlines. > Computing centerlines...Running TetGen. > TetGen command line options: pT1.000000e-08dzQ > ERROR: In > /home/grr/programme/vmtk-1.0.1/vtkVmtk/ComputationalGeometry/vtkvmtkNonManifoldFastMarching.cxx, > line 667 > vtkvmtkNonManifoldFastMarching (0xe6fdac0): Cost function array with name > specified does not exist! > > ERROR: In > /home/grr/programme/vmtk-1.0.1/vtkVmtk/ComputationalGeometry/vtkvmtkSteepestDescentLineTracer.cxx, > line 318 > vtkvmtkSteepestDescentLineTracer (0xe6f9210): Descent array with name > specified does not exist! > > Done executing vmtkcenterlines. > Writing VTK XML surface file. > Output vmtkcenterlines members: > >> 2. Compute the Delaunay tessellation on the closed surface (prior to cutting >> the endcaps open) using vmtkdelaunayvoronoi >> and feed it to vmtkcenterlines, this way: >> >> vmtkdelaunayvoronoi -ifile unclipped.vtp --pipe vmtkcenterlines -ifile >> clipped.vtp ... > > Using this command causes no errors but the resulting file is also empty. > > Any ideas what else I could try? > > Many thanks for any help or hints. > Roman > > > >> >> This will allow you to take advantage of the clipped endcaps for the >> seedselector (since you feed clipped.vtp as input to vmtkcenterlines) >> but use the Delaunay tessellation computed from the unclipped one, which >> shouldn't have the issue with the artifactual inner tets. >> >> In any case, it would be good for me to have the surface so I can use it to >> fix the internal delaunay tet selection issue. >> >> Best, >> >> Luca >> >> >> >> On Feb 22, 2013, at 9:32 AM, Dr. Roman Grothausmann wrote: >> >>> (now with images) >>> >>> Dear mailing list members, >>> >>> >>> Another problem I have is that not all end-points that I extract from the >>> output of vmtknetwork (magenta lines in attached image) are tracked by >>> vmtkcenterlines (grey/blue lines), most are but some are not. See the end >>> points of the magenta lines of which a grey line stretches like a cobweb >>> string. After removing these cobweb lines I end up with the blue lines >>> which are OK except for the lacking branches. >>> What could be the reason for that and how could I avoid it? >>> >>> Any help or hints are very much appreciated >>> Roman >>> >>> >>> -- >>> Dr. Roman Grothausmann >>> >>> Tomographie und Digitale Bildverarbeitung >>> Tomography and Digital Image Analysis >>> >>> Institut für Funktionelle und Angewandte Anatomie, OE 4120 >>> Medizinische Hochschule Hannover >>> Carl-Neuberg-Str. 1 >>> D-30625 Hannover >>> >>> Tel. +49 511 532-9574 >>> >>> >>> <KO4_01_08_12_002_PD PMT_seg-8bit_fh0_obs_d1 >>> orig_fh0_obs_mc50_lmp_nw-skel1.05_ep_s2t0_mo004_ep_cl_01_03.gif><KO4_01_08_12_002_PD >>> PMT_seg-8bit_fh0_obs_d1 >>> orig_fh0_obs_mc50_lmp_nw-skel1.05_ep_s2t0_mo004_ep_cl_01_05.gif>------------------------------------------------------------------------------ >>> Everyone hates slow websites. So do we. >>> Make your web apps faster with AppDynamics >>> Download AppDynamics Lite for free today: >>> http://p.sf.net/sfu/appdyn_d2d_feb_______________________________________________ >>> vmtk-users mailing list >>> vmtk-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/vmtk-users >> > > -- > Dr. Roman Grothausmann > > Tomographie und Digitale Bildverarbeitung > Tomography and Digital Image Analysis > > Institut für Funktionelle und Angewandte Anatomie, OE 4120 > Medizinische Hochschule Hannover > Carl-Neuberg-Str. 1 > D-30625 Hannover > > Tel. +49 511 532-9574 ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb _______________________________________________ vmtk-users mailing list vmtk-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/vmtk-users
