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
