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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Hi Berti,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">There is a pretty robust conversion algorithm implemented within 3D Slicer but using solely VTK:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><a href="https://github.com/Slicer/Slicer/blob/master/Libs/vtkSegmentationCore/vtkClosedSurfaceToBinaryLabelmapConversionRule.cxx#L118">https://github.com/Slicer/Slicer/blob/master/Libs/vtkSegmentationCore/vtkClosedSurfaceToBinaryLabelmapConversionRule.cxx#L118</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">It consists of a short pipeline of standard VTK filters (some preprocessing then vtkPolyDataToImageStencil and vtkImageStencil).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Let me know if you have any questions.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">csaba<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> vtkusers <vtkusers-bounces@public.kitware.com>
<b>On Behalf Of </b>Berti Krüger<br>
<b>Sent:</b> Tuesday, June 5, 2018 03:26<br>
<b>To:</b> David Gobbi <david.gobbi@gmail.com><br>
<b>Cc:</b> vtkusers@vtk.org<br>
<b>Subject:</b> Re: [vtkusers] Solid Voxelization with VTK<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p><span style="font-family:"Calibri",sans-serif;color:black">Hi David,<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">thank you very much for your help.<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">I tried the example from your link. Unfortunately the result is same as using the vtkVoxelModeller:<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><img border="0" width="800" height="811" style="width:8.3333in;height:8.4479in" id="_x0037_4177_rs_x007c_1" src="cid:image001.jpg@01D3FCB6.0565A030" alt="Screenshot result voxelization"><br>
I get only a voxelization of the surface. The interior of the voxelized cone is still hollow and not filled with voxels (at least this is implied by the visualization).<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">For the visualization i use Bill Lorensen's example code from here:<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><a href="https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Florensen.github.io%2FVTKExamples%2Fsite%2FCxx%2FMedical%2FGenerateCubesFromLabels%2F&data=02%7C01%7Ccsaba.pinter%40queensu.ca%7C63496d6b50e24ff32f7808d5cab5a98b%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C1%7C636637804016225671&sdata=4TKi7VbGBfbM4DpQuLib1m0YGmLJO%2FU7BAO6ZKCUpVU%3D&reserved=0" id="LPlnk363920">https://lorensen.github.io/VTKExamples/site/Cxx/Medical/GenerateCubesFromLabels/</a><o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">I have attached this small example which compiles with VTK 8.1 to show the issue. It basicly only consist of the example code from your link (<a href="https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Florensen.github.io%2FVTKExamples%2Fsite%2FCxx%2FPolyData%2FPolyDataToImageData%2F&data=02%7C01%7Ccsaba.pinter%40queensu.ca%7C63496d6b50e24ff32f7808d5cab5a98b%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C1%7C636637804016225671&sdata=hXqgnekqjjNPflRneU0sU7DFo%2B%2FcdBfIFDcpE%2FZXiOg%3D&reserved=0" id="LPlnk404825">https://lorensen.github.io/VTKExamples/site/Cxx/PolyData/PolyDataToImageData/</a>)
and the visualization code from the Bill Lorensen's example from the link above. I have not changed much.<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Any idea what is going wrong or what can i do get also voxelization of the interior (solid voxelization)?<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Thank you very much in advance.<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Regards<o:p></o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black">Berti<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-top:15.0pt;mso-line-height-alt:15.75pt"><span style="font-size:16.0pt;font-family:"Segoe UI Light",sans-serif;color:#0078D7"><a href="https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Florensen.github.io%2FVTKExamples%2Fsite%2FCxx%2FPolyData%2FPolyDataToImageData%2F&data=02%7C01%7Ccsaba.pinter%40queensu.ca%7C63496d6b50e24ff32f7808d5cab5a98b%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C1%7C636637804016225671&sdata=hXqgnekqjjNPflRneU0sU7DFo%2B%2FcdBfIFDcpE%2FZXiOg%3D&reserved=0" target="_blank"><span style="text-decoration:none">PolyDataToImageData
- lorensen.github.io</span></a><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-top:15.0pt;line-height:10.5pt"><span style="font-size:10.5pt;font-family:"Segoe UI",sans-serif;color:#666666">lorensen.github.io<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-top:15.0pt;line-height:15.0pt"><span style="font-size:10.5pt;font-family:"Segoe UI",sans-serif;color:#666666">If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:<o:p></o:p></span></p>
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<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-top:15.0pt;mso-line-height-alt:15.75pt"><span style="font-size:16.0pt;font-family:"Segoe UI Light",sans-serif;color:#0078D7"><a href="https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Florensen.github.io%2FVTKExamples%2Fsite%2FCxx%2FMedical%2FGenerateCubesFromLabels%2F&data=02%7C01%7Ccsaba.pinter%40queensu.ca%7C63496d6b50e24ff32f7808d5cab5a98b%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C1%7C636637804016225671&sdata=4TKi7VbGBfbM4DpQuLib1m0YGmLJO%2FU7BAO6ZKCUpVU%3D&reserved=0" target="_blank"><span style="text-decoration:none">GenerateCubesFromLabels
- GitHub Pages</span></a><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-top:15.0pt;line-height:10.5pt"><span style="font-size:10.5pt;font-family:"Segoe UI",sans-serif;color:#666666">lorensen.github.io<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-top:15.0pt;line-height:15.0pt"><span style="font-size:10.5pt;font-family:"Segoe UI",sans-serif;color:#666666">Usage: GenerateCubesFromLabels FullHead.mhd StartLabel EndLabel where InputVolume is a meta file containing a 3
volume of discrete labels.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">Von:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"> David Gobbi <<a href="mailto:david.gobbi@gmail.com">david.gobbi@gmail.com</a>><br>
<b>Gesendet:</b> Montag, 28. Mai 2018 23:13<br>
<b>An:</b> Berti Krüger<br>
<b>Cc:</b> <a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a><br>
<b>Betreff:</b> Re: [vtkusers] Solid Voxelization with VTK</span><span style="font-family:"Calibri",sans-serif;color:black">
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black"> <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Hi Berti,
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">If its a triangulated surface that you want to fill with voxels, use vtkPolyDataToImageStencil:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black"><a href="https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Florensen.github.io%2FVTKExamples%2Fsite%2FCxx%2FPolyData%2FPolyDataToImageData%2F&data=02%7C01%7Ccsaba.pinter%40queensu.ca%7C63496d6b50e24ff32f7808d5cab5a98b%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C1%7C636637804016225671&sdata=hXqgnekqjjNPflRneU0sU7DFo%2B%2FcdBfIFDcpE%2FZXiOg%3D&reserved=0" target="_blank" id="LPlnk739546">https://lorensen.github.io/VTKExamples/site/Cxx/PolyData/PolyDataToImageData/</a>
<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-top:15.0pt;mso-line-height-alt:15.75pt"><span style="font-size:16.0pt;font-family:"Segoe UI Light",sans-serif;color:#0078D7"><a href="https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Florensen.github.io%2FVTKExamples%2Fsite%2FCxx%2FPolyData%2FPolyDataToImageData%2F&data=02%7C01%7Ccsaba.pinter%40queensu.ca%7C63496d6b50e24ff32f7808d5cab5a98b%7Cd61ecb3b38b142d582c4efb2838b925c%7C1%7C1%7C636637804016225671&sdata=hXqgnekqjjNPflRneU0sU7DFo%2B%2FcdBfIFDcpE%2FZXiOg%3D&reserved=0" target="_blank"><span style="text-decoration:none">PolyDataToImageData
- lorensen.github.io</span></a><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-top:15.0pt;line-height:15.0pt"><span style="font-size:10.5pt;font-family:"Segoe UI",sans-serif;color:#666666">If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">If its a mesh of 3D elements and you want to sample the elements to create voxels, try vtkResampleToImage.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black"> - David<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">On Mon, May 28, 2018 at 4:41 PM, Berti Krüger <<a href="mailto:berti_krueger@hotmail.com" target="_blank" id="LPlnk570911">berti_krueger@hotmail.com</a>> wrote:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black">Hello Everyone.<br>
<br>
For my Project i have to voxelize a 3D-Triangle-Mesh. I already found the<br>
vtkVoxelModeller which, while somewhat slow (only around 200 Triangles per<br>
second), works, but only voxelizes the outer shell where the mesh boundary<br>
triangles are. The inner part of the mesh stays hollow. <br>
<br>
Is there some way to get solid voxelization of 3D-Triangle-Meshes out of the<br>
box with VTK ?<br>
<br>
<br>
Thank you very much in advance,<br>
<br>
Berti<o:p></o:p></span></p>
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