(Responding back to the ParaView user's list, which is more appropriate than the developer's list.)
The documentation for the mathematical operation done by the curvature operation is given here: http://www.vtk.org/doc/nightly/html/classvtkCurvatures.html#details You can also get more general descriptions of Gaussian curvature and mean curvature estimation from various sources. Here is a description on Wikipedia: http://en.wikipedia.org/wiki/Curvature#Curvature_of_surfaces If I am reading the documentation correctly, the Gaussian curvature is giving you the bend of the surface in radians per distance squared, and the mean curvature is giving you the bend in radians per distance. Playing with the filter a bit, I notice that it is prone to give you unreasonably high values (in the positive or negative direction) for places where the surface is pinched or you have poorly shaped triangles in the mesh. -Ken On 5/4/15, 5:54 AM, "Laura Masse" <[email protected]> wrote: >Hi Kenneth, > >I take again this threat, I'm sorry for the long delay. > >The curvature filter seems is the thing I need, I would like to have a >numerical indicator of the surface roughness. Curvature filter gives me >two >different indicator depending which were selected (Gaussian and Mean). In >both cases I got data range, but I don´t understand the meaning of these >ranges. > >For example in the case of Mean_Curvatura I got [-199,711, 165.178] > >Could be is the mean of the bend of all points ? > >I'm so confuse, please anyone can help me ? > >Otherwise, Is there a other way to have the roughness indicator ? > >Advanced thanks !!! > >- > > > >-- >View this message in context: >http://the-unofficial-paraview-developers-forum.34153.x6.nabble.com/3d-sur >face-roughness-measurement-tp3657p3767.html >Sent from the The Unofficial ParaView Developers Forum mailing list >archive at Nabble.com. >_______________________________________________ >Powered by www.kitware.com > >Visit other Kitware open-source projects at >http://www.kitware.com/opensource/opensource.html > >Search the list archives at: >http://markmail.org/search/?q=Paraview-developers > >Follow this link to subscribe/unsubscribe: >http://public.kitware.com/mailman/listinfo/paraview-developers _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Search the list archives at: http://markmail.org/search/?q=ParaView Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/paraview
