Thank you Luca, It is much better than before. In most cases, it can produce centerline. However, if I select all branch distal points, it would not return.
Does vmtk support timeout? If the time took for calculating centerline between two points is longer than expected, vmtk will ignore the two points and continue to calculate others. Best regards, Jerry On Fri, Dec 23, 2011 at 5:11 PM, Luca Antiga <luca.ant...@orobix.com> wrote: > Hi Linfeng, > the surface probably leads to degenerate Voronoi polygons somewhere in the > smaller branches. > Try smoothing the surface first, using > vmtksurfacesmoothing -ifile airway.vtp -passband 0.01 -iterations 30 -ofile > airway_smooth.vtp > > maybe try with -passband 0.1 if the smoothing is too strong with 0.01. > > I also suggest to get rid of the disconnected segments using > vmtksurfaceconnectivity. > > You can do everything in a single pipe > > vmtksurfaceconnectivity -ifile airway.vtp --pipe vmtksurfacesmoothing > -passband 0.01 -iterations 30 --pipe vmtkcenterlines -ofile > airway_centerlines.vtp > > Let me know if this helps. > > > Luca > > > On Dec 22, 2011, at 4:29 PM, Lingfeng Zhuang wrote: > >> Hi >> >> I am trying to extract centerline for the polydata attached. But after >> picking start point and end points, the program did not return in two >> hours. Python took 100% CPU usage in this period. >> >> The command used is vmtkcenterlines -ifile airway.vtp -ofile >> foo_centerlines.vtp >> >> Please help. >> >> Best regards, >> >> Jerry >> <airway.vtp><endpoints.JPG><startpoints.JPG>------------------------------------------------------------------------------ >> Write once. Port to many. >> Get the SDK and tools to simplify cross-platform app development. Create >> new or port existing apps to sell to consumers worldwide. Explore the >> Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join >> http://p.sf.net/sfu/intel-appdev_______________________________________________ >> vmtk-users mailing list >> vmtk-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/vmtk-users > ------------------------------------------------------------------------------ Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev _______________________________________________ vmtk-users mailing list vmtk-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/vmtk-users
