Operating system: windows 8.1 Pro Slicer version: 4.3.1 Expected behavior: to have the possibility to transform surface models (mesh in stl format) to smooth geometry models (nurbs e.g. in IGES format) Actual behavior: 3D models are surface meshes, not real geometries

@moondrake99 thank you very much for the way you carried out the discussion. I’m sorry for my absence in the meantime, but I found you highlighted the problem in a more exhaustive way than I can. I try to explain again my simplier challenge, the reason why I need geometry: with anatomical structure…

[image] gregorio: D models are surface meshes, Hi Andras, I was looking at this extension. Does it need a segmented image as input to produce mesh? is there any explanation on how to use segment mesher extension? Is there any extension available that can create volumetric tetrahedral meshes …

[image] Saima: Does it need a segmented image as input to produce mesh? You need a segmentation node as input. You can create segmentation node from an existing labelmap volume or model node (surface mesh). If all you have is an grayscale input volume, then you can create a segmentation node …

Dear Lasso, I tried to use the segment mesher extension. Followed these steps: Downloaded Braintumor data Labeled tumor and brain using editor in segmentation [image] Mesh generation >> Clever [image] Settings Selected labels as inputs Output models new >> output model1 and output model 2 …

Use recent nightly version of Slicer. You can Segment using Segment Editor module and create volumetric mesh using Segment mesher extension.

Did segmentation with segment editor for brain portion. Then using Segment Mesher it generated the following. [image] How to access all the nodes(points) for the mesh generated for the brain portion? Thank you Regards, Saima Safdar

Segment index is stored in the mesh for each cell as cell scalar data.

[image] lassoan: ent index is stored in the mesh for each cell as cell scalar data. mesh = n.GetMesh() mesh (vtkCommonDataModelPython.vtkUnstructuredGrid) Dear Lasso I need to understand its architecture. Aim is to extract the vertexes and its x, y, z locations of only the brain por…

You can extract any portion of the mesh by using Slicer’s Python console, using VTK filters that extract cells that have scalars in the specified range. Probably threshold filter would work and it takes only a few lines of Python code. If you are not familiar with VTK then read the VTK textbook ( ht…

thank you Andras. I will contact you once I done.

Use segmentations in CAD or FEM software

Support

Saima (saima safdar) July 30, 2018, 12:17pm 28

Did segmentation with segment editor for brain portion.
Then using Segment Mesher it generated the following.

How to access all the nodes(points) for the mesh generated for the brain portion?

Thank you

Regards,
Saima Safdar

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Use segmentations in CAD or FEM software

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