Difference between revisions of "2017 Winter Project Week/Support for volumetric meshes"

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Image:PW-Winter2017.png|link=2017_Winter_Project_Week#Projects|[[2017_Winter_Project_Week#Projects|Projects List]]
 
Image:PW-Winter2017.png|link=2017_Winter_Project_Week#Projects|[[2017_Winter_Project_Week#Projects|Projects List]]
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<!-- Use the "Upload file" link on the left and then add a line to this list like "File:MyAlgorithmScreenshot.png" -->
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==Previous works==
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<gallery>
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File:volumetricMeshSlicer3.png | FEMesh in Slicer 3
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File:CleaverExtension.jpeg | Cleaver Extensio
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</gallery>
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==Results==
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<gallery>
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File:Models_VolumetricMesh3.png | Volumetric Mesh
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File:Models_VolumetricMesh1.gif | Volumetric Mesh (gif)
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File:Models_VolumetricMesh2.gif | Models module display widget (gif)
 
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* Alexis Girault (Kitware, Inc.)
 
* Alexis Girault (Kitware, Inc.)
 
* Curtis Lisle (KnowledgeVis, LLC)
 
* Curtis Lisle (KnowledgeVis, LLC)
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* Steve Piper (Isomics, Inc.)
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* Steve Pieper (Isomics, Inc.)
  
 
==Project Description==
 
==Project Description==
 
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{| class="wikitable"
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! style="text-align: left; width:27%" |  Objective
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! style="text-align: left; width:20%" |  Objective
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! style="text-align: left; width:27%" |  Approach and Plan
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! style="text-align: left; width:20%" |  Approach and Plan
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! style="text-align: left; width:27%" |  Progress and Next Steps
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! style="text-align: left; width:20%" |  Progress/Results
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! style="text-align: left; width:20%" |  Next steps/Future work
 
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<!-- Approach and Plan bullet points -->
 
<!-- Approach and Plan bullet points -->
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* Initial discussions needed with Curtis and Steve based on existing work: IA FEMesh from Slicer 3, BodyCentricCubicMesh and MeshCompression modules, and the CleaverExtension.
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* Initial discussions needed with Curtis and Steve based on existing work: IA FEMesh from Slicer 3, BodyCentricCubicMesh and MeshCompression modules, and the CleaverExtension. Some parts of the IA FEMesh module were prototyped in early Slicer 4 (Curtis).
 
* Probably investigate the creation of a MRML node similar to Models (possibly create a hierarchy between both?) that would wrap a vtkUnstructuredGrid in order to visualize, load and save the meshes.
 
* Probably investigate the creation of a MRML node similar to Models (possibly create a hierarchy between both?) that would wrap a vtkUnstructuredGrid in order to visualize, load and save the meshes.
 
* Investigate best way to adapt previous Slicer-based volumetric work that allowed for creation and edition (bullet point 1) to work with the new architecture put in place within Slicer 4 (bullet point 2).
 
* Investigate best way to adapt previous Slicer-based volumetric work that allowed for creation and edition (bullet point 1) to work with the new architecture put in place within Slicer 4 (bullet point 2).
 
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|
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<!-- Progress and Next steps bullet points (fill out at the end of project week) -->
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<!-- Progress/Results -->
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* Some parts of the IA FEMesh module were prototyped in early Slicer 4 (Curtis).
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* Can Read & Write Unstructured Grid mesh (vtk or vtu)
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* Fix bug in vtk reader to retrieve all point data and cell data.
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* vtkMRMLModelNode now holds a "mesh", either a polydata (surface mesh) or an unstructured grid (volumetric mesh)
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* vtkMRMLDisplayNode had a major clean up to consolidate scalar range options (scalarRangeFlag and autoScalarRange). Other clean up made to retrieve the look-up table for specific nodes only holding color transfer functions (ex: vtkMRMLProceduralColorNode).
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* DisplayableManager updated for 3D to allow cutting through volumetric mesh.
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* SliceDisplableManager updated for 2D Slices to be able to use same display properties than 3D view.
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* qMRMLModelDisplayNodeWidget updated to simplify scalar range mode selection, adapt number of decimals and single step for manual selection of the range based on the magnitude of the current values.
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* Threshold displayed mesh by scalar values.
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* Display information about the model type (surface or volumetric) for the user to be able to distinct it in the module widget.
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* WIP branch on github: https://github.com/Slicer/Slicer/compare/master...agirault:volumetric-mesh-support
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<!-- Next steps/Future work-->
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* Clean up and consolidate qSlicerModelsModuleWidget (display properties, representations, wireframe, clipping... just move options around to make it more usable)
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* Add clipping option to smoothen the cut (using vtkClipDataSet vs vtkExtractGeometry)
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* Add support to pass through CLI (SlicerCLILogic)
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* Test with more cases, like fiber bundles etc... (changes could have a lot of impacts because there were changes to vtkMRMLDisplayNode and vtkMRMLModelNode. Make sure the updated API stays backward compatible).
 
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Latest revision as of 15:36, 16 January 2017

Home < 2017 Winter Project Week < Support for volumetric meshes

Previous works

  • FEMesh in Slicer 3

  • Cleaver Extensio

Results

  • Volumetric Mesh

  • Volumetric Mesh (gif)

  • Models module display widget (gif)

Key Investigators

  • Alexis Girault (Kitware, Inc.)
  • Curtis Lisle (KnowledgeVis, LLC)
  • Steve Pieper (Isomics, Inc.)

Project Description

Objective Approach and Plan Progress/Results Next steps/Future work

From top priority to possible future work:

  • Being able to visualize, load and save volumetric meshes
  • Improving clipped visualization of models (surface models or volumetric meshes) and facilitate the display of the point data (active scalars).
  • Being able to create volumetric meshes from label maps (or segmentation?) and possibly edit them
  • Initial discussions needed with Curtis and Steve based on existing work: IA FEMesh from Slicer 3, BodyCentricCubicMesh and MeshCompression modules, and the CleaverExtension. Some parts of the IA FEMesh module were prototyped in early Slicer 4 (Curtis).
  • Probably investigate the creation of a MRML node similar to Models (possibly create a hierarchy between both?) that would wrap a vtkUnstructuredGrid in order to visualize, load and save the meshes.
  • Investigate best way to adapt previous Slicer-based volumetric work that allowed for creation and edition (bullet point 1) to work with the new architecture put in place within Slicer 4 (bullet point 2).
  • Can Read & Write Unstructured Grid mesh (vtk or vtu)
  • Fix bug in vtk reader to retrieve all point data and cell data.
  • vtkMRMLModelNode now holds a "mesh", either a polydata (surface mesh) or an unstructured grid (volumetric mesh)
  • vtkMRMLDisplayNode had a major clean up to consolidate scalar range options (scalarRangeFlag and autoScalarRange). Other clean up made to retrieve the look-up table for specific nodes only holding color transfer functions (ex: vtkMRMLProceduralColorNode).
  • DisplayableManager updated for 3D to allow cutting through volumetric mesh.
  • SliceDisplableManager updated for 2D Slices to be able to use same display properties than 3D view.
  • qMRMLModelDisplayNodeWidget updated to simplify scalar range mode selection, adapt number of decimals and single step for manual selection of the range based on the magnitude of the current values.
  • Threshold displayed mesh by scalar values.
  • Display information about the model type (surface or volumetric) for the user to be able to distinct it in the module widget.
  • WIP branch on github: https://github.com/Slicer/Slicer/compare/master...agirault:volumetric-mesh-support
  • Clean up and consolidate qSlicerModelsModuleWidget (display properties, representations, wireframe, clipping... just move options around to make it more usable)
  • Add clipping option to smoothen the cut (using vtkClipDataSet vs vtkExtractGeometry)
  • Add support to pass through CLI (SlicerCLILogic)
  • Test with more cases, like fiber bundles etc... (changes could have a lot of impacts because there were changes to vtkMRMLDisplayNode and vtkMRMLModelNode. Make sure the updated API stays backward compatible).

Background and References

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