Difference between revisions of "2008 Winter Project Week:Meshing Techniques into NA-MIC Toolkit"

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__NOTOC__
 
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===Key Investigators===
 
===Key Investigators===
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* University of Iowa:  Nicole Grosland , Vince Magnotta, Kiran Shivanna, Srinivas Stadepali
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* University of Iowa:  Nicole Grosland , Vince Magnotta, Kiran Shivanna
  
  
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<h1>Objective</h1>
 
<h1>Objective</h1>
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The University of Iowa has developed a complete Finite Element meshing workflow to operates from image source through to FE simulation using Abaqus. For this project, we are evaluating neural network algorithms for segmentation of bone and joint structures.  We are incorporating meshing modification tools, such as Sandia's Mesquite library for mesh improvement, to work in the NA-MIC environment.  
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The University of Iowa has developed a complete Finite Element meshing workflow to operates from image source through to FE simulation. For this project, we will be creating new Slicer3 execution model programs to support the meshing workflow and to expand the current meshing capabilities.
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<h1>Approach, Plan </h1>
 
<h1>Approach, Plan </h1>
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Throughout this project, we follow the process of developing standalone applications to address the problem first, then adapt them for deployment in the NA-MIC toolkit.
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Two tools will be developed to help support the meshing workflow. This includes the following:
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1) Tool for material property assignment for mesh elements using imaging data, and 2) Tool to export VTK unstructured grids to the ABAQUS format. Start the development of an execution model for a mapped meshing algorithm that registers a template mesh to a target surface
  
 
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<h1>Progress</h1>
 
<h1>Progress</h1>
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A utility for exporting the solid meshes to Abaqus format have been developed as a Slicer3 execution model program. This work was tested using existing meshes that have been developed in IA-FEMesh. Work has started on a utility for the assignment of elementwise material properties. This is currently being tested. Finally, the finite element mapped meshing is currently being converted to a Slicer3 execution model. This work continue over the next few months.
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====June 2007 Project Week====
 
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Discussion of meshing improvement packages.  Drafted an effort  with Sandia Labs to test the Mesquite mesh improvement library for biomedical mesh applications. Discussed licensing issues with NA-MIC regarding external libraries. Specific accomplishments this week:
 
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*Integrated a rigid body initialization for a Thirion Demons registration for atlas <-> subject registration. The above modification was used to warp the atlas to the subject as shown in the figures.
 
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*Neural network code now supports all ITK transforms for registration of the atlas<->subject. This was achieved using the itkTransformReader and the a templated function over the image type and transform type to resample the images.
 
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====Jan 2007 Project Half Week====
 
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Completed a command line module to perform voxel meshing in Slicer3.   Developed VTK-based algorithms for creating triangulated surface representations with embedded holes.
 
 
   
 
   
 
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===References===
 
===References===
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*Nicole M Grosland , Curtis Lisle, Kiran H. Shivanna, Steve Pieper, Vincent A Magnotta, "A CHECK OF MESH QUALITY", submitted to ASB'07
 

Latest revision as of 19:46, 10 January 2008

Home < 2008 Winter Project Week:Meshing Techniques into NA-MIC Toolkit
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Mesh Exporting


Key Investigators

  • University of Iowa: Nicole Grosland , Vince Magnotta, Kiran Shivanna


Objective

The University of Iowa has developed a complete Finite Element meshing workflow to operates from image source through to FE simulation. For this project, we will be creating new Slicer3 execution model programs to support the meshing workflow and to expand the current meshing capabilities.


Approach, Plan

Two tools will be developed to help support the meshing workflow. This includes the following: 1) Tool for material property assignment for mesh elements using imaging data, and 2) Tool to export VTK unstructured grids to the ABAQUS format. Start the development of an execution model for a mapped meshing algorithm that registers a template mesh to a target surface

Progress

A utility for exporting the solid meshes to Abaqus format have been developed as a Slicer3 execution model program. This work was tested using existing meshes that have been developed in IA-FEMesh. Work has started on a utility for the assignment of elementwise material properties. This is currently being tested. Finally, the finite element mapped meshing is currently being converted to a Slicer3 execution model. This work continue over the next few months.



References

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