[vtkusers] Creating Models from Segmented Volume Data

[lynx.abraxas at freenet.de]

Thanks   a   lot   Bill   for  the  examples.  It's  a  big  help.  I  created
ctifs_stack_ws01.mhd:

ObjectType = Image
NDims = 3
DimSize = 518 229 393
ElementType = MET_USHORT
HeaderSize = -1
ElementByteOrderMSB = False
ElementDataFile = ctifs_stack_ws01.raw

and called marching_surf ctifs_stack_ws01.mhd 100 110
ERROR:  In  /usr/src/vtk/VTK/Graphics/vtkWindowedSincPolyDataFilter.cxx,  line
113
vtkWindowedSincPolyDataFilter (0x8061e80): No data to smooth!

If  I  use  vtkTIFFReader  instead I get a segmentation fault. ImageJ is happy
with both the 3D-TIFF or the raw-file. What might be the problem here?

I also wonder why
+    selector->SetInputArrayToProcess(0, 0, 0,
+        vtkDataObject::FIELD_ASSOCIATION_CELLS,
+        vtkDataSetAttributes::SCALARS);

would  change  the  surface  to  be  cube-like  (Lego-like).  selector  is   a
vtkThreshold, isn't it?


Many thanks for the examples.
Regards
Lynx



On 11/08/09 13:59:21, Bill Lorensen wrote:
> Folks,
> 
> I've added two examples to the vtk wiki that create models from
> segmented volume data. The results of each can be displayed with
> Paraview: http://paraview.org.
> 
> 1) Create cubical polydata models from labeled volume data
> http://www.vtk.org/Wiki/Create_cubes_from_labeled_volume_data
> 
> 2) Create smoothed polydata models from labeled volume data (Discrete
> MarchingCubes) http://www.vtk.org/Wiki/Create_models_from_labeled_volume_data_(Discrete_MarchingCubes)
> 
> Bill
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