[vtkusers] gradient vector using vtk.

dqchen dqchen at cvip.louisville.edu
Sun Jun 25 00:38:21 EDT 2006

Dear All:

   Now I am trying to obtain the gradient vector at each vertice of 3D polygonal data. I fidn that the vtkFiniteDifferenceGradientEstimator takes takes a scalar input of vtkImageData. Does anyone have any hint on how to compute the gradient vector of 3D polygonal data?
   Thanks a lot.

Best Wishes,

Dongqing Chen
Rm. 007, Paul C. Lutz Hall 
Computer Vision & Image Processing (CVIP) Lab
Dept. of Electrical & Computer Engineering
University of Louisville
Louisville, KY. 40292
Email: dqchen at cvip.louisville.edu
Phone: (502)852-6130(Office)
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