[vtkusers] Help for using vtkCurvatures

Rong Xu xurong1981 at gmail.com
Thu Aug 9 08:27:37 EDT 2012

Hi, Jana Sefcikova :

Thank you for your advice !

But I need to get the exact Gauss or Mean curvature. what do you think if I
convert point cloud to a mesh, then use vtkCurvatures to get the curvature
for each point ?

Also, I have another question. If I can get the curvatures, but how to get
the curvature value for each point from vtkCurvatures ? Though I know some
method like "curv->GetOutput()->GetPointData()->GetScalars()" to get the
curvature values, but how can I know the coordinate (x, y, z) of that
curvature value at the same time ?

2012/8/9 Jana Sefcikova <neollie at gmail.com>

> Hi , vtkCurvatures works with triangulated mesh, and ignores points and
> lines.
> If you do not need exactly Gauss or Mean curvature, you could use
> vtkPointSetCurvatureEstimation algorithm presented here
> http://www.insight-journal.org/browse/publication/708/
> Jana


Best Regards!

Rong Xu,  Ph.D Student
Ohya Lab
Graduate School of Global Information and Telecommunication
Studies (GITS), Waseda University
1-6-1 Nishi Waseda, Shinjuku-ku, Tokyo, Japan (¨“169-8050)

Tel:          +81-80-4208-1207
E-mail:     xurong1981 at gmail.com
               xurong at fuji.waseda.jp
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