Mesh internal surface smoothing behavior changed in vtkWindowedSincPolyDataFilter - Support - VTK
![Mesh internal surface smoothing behavior changed in vtkWindowedSincPolyDataFilter - Support - VTK](https://discourse.vtk.org/uploads/default/original/2X/a/a6609463fa083082648046345fffa4dbc0f3e28e.png)
It seems that the rewrite of vtkWindowedSincPolyDataFilter (that amazingly improved its performance) also changed how internal surfaces are smoothed. Smoothing of internal surfaces are important because when we segment a medical image we usually annotate many adjacent structures that have common surfaces and when we apply smoothing then we want to smooth surface of each structure and not just the outer surface of the entire segmented region. The old version (VTK8) smoothed the internal surfaces
![](https://0.academia-photos.com/attachment_thumbnails/75543580/mini_magick20211202-27972-1mucppe.png?1638436699)
PDF) The VTK User's Guide 11th Edition Contributors
![](https://discourse.vtk.org/uploads/default/original/2X/5/5b83e221144778f1e14eb26ee59842367fb41eb6.png)
Clipping data with manually constructed closed surface polyData. - Support - VTK
![](https://discourse.vtk.org/uploads/default/original/1X/1b8f149245394c74e5f3c258ff0f4add3fc8c7ac.jpeg)
How to highlight a smooth region on a polygonal mesh - Support - VTK
![](https://0.academia-photos.com/attachment_thumbnails/105233654/mini_magick20230823-1-waait8.png?1692811061)
PDF) The VTK User's Guide 11th Edition Contributors
vtkProcrustesAlignmentFilter fails for certain geometries - Support - VTK
VT K Users Guide, PDF, Scientific Modeling
smoothing mesh for extruded surface? - ParaView Support - ParaView
VTK 9: Surface smoothing prevent segments from being shown in 3D · Issue #5223 · Slicer/Slicer · GitHub
![](http://www.vtk.org/pipermail/vtkusers/attachments/20111129/8f446602/attachment.png)
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![](https://raw.githubusercontent.com/Kitware/vtk-examples/gh-pages/src/Testing/Baseline//Cxx/Meshes/TestWindowedSincPolyDataFilter.png)
VTK: vtkWindowedSincPolyDataFilter Class Reference
![](https://i.stack.imgur.com/hcGeN.png)
graphics - How to repair a broken surface in vtk? - Stack Overflow