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
Subdivision Surface Modifier — Blender Manual
A hexahedral-dominant FE meshing technique using trimmed hexahedral elements preserving sharp edges and corners
Improved Functionality and Tips for Importing STL and NASTRAN® Files
Joint Smoothing in Slicer 4.13 works incorrectly - Development
Computational system streamlines the design of fluidic devices, MIT News
Moving Mesh, Sliding Mesh, Mesh Motion - MR CFD - Simulation, Training
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Predicting stress, strain and deformation fields in materials and structures with graph neural networks
Subdivision Modeling Exercise
Gmsh 4.12.2
