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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi Folks,<o:p></o:p></p><p class=MsoNormal> I need to apply FEM registration on STL files.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> As per <a href="http://www.itk.org/pipermail/insight-users/2009-August/032335.html">http://www.itk.org/pipermail/insight-users/2009-August/032335.html</a> the link I used an VTK STL reader and applied vtkDelaunay3D filter to get the vtkUnstructuredGrid.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I was also able to convert vtkUnstructuredGrid to Itk Mesh data.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Now I need to apply the FEM registration on this data, What should I do. I do read the <a href="http://www.itk.org/pipermail/insight-users/2007-November/024256.html">http://www.itk.org/pipermail/insight-users/2007-November/024256.html</a> link<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>But I am using the latest ITK in which itk::Solver removed the variables el <a href="http://www.itk.org/Wiki/Refactoring_itk::FEM_framework_-_V4">http://www.itk.org/Wiki/Refactoring_itk::FEM_framework_-_V4</a> <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>How can I use Element3DCOLinearTetrahedronStrain to import vtkUnstructuredGrid ?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks in advance for any help.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Regards,<o:p></o:p></p><p class=MsoNormal>Saneesh.<o:p></o:p></p></div></body></html>