[Insight-users] principal curvature direction

[Iván Macía]

Hi Sami,

 

Have a look at the recent discussion on Hessian computation here

HYPERLINK
"http://public.kitware.com/pipermail/insight-users/2008-January/024616.html"
http://public.kitware.com/pipermail/insight-users/2008-January/024616.html

 

After computing the Hessian tensors, you can call the method
SymmetricSecondRankTensor::ComputeEigenAnalysis() to compute eigenvalues and
eigenvectors thus obtaining principal curvatures and directions.

 

HYPERLINK
"http://www.itk.org/Doxygen/html/classitk_1_1SymmetricSecondRankTensor.html"
http://www.itk.org/Doxygen/html/classitk_1_1SymmetricSecondRankTensor.html

 

You can use also

 

HYPERLINK
"http://www.itk.org/Doxygen/html/classitk_1_1SymmetricEigenAnalysisImageFilt
er.html"http://www.itk.org/Doxygen/html/classitk_1_1SymmetricEigenAnalysisIm
ageFilter.html

and

HYPERLINK
"http://www.itk.org/Doxygen/html/classitk_1_1SymmetricEigenAnalysis.html"htt
p://www.itk.org/Doxygen/html/classitk_1_1SymmetricEigenAnalysis.html

 

Best regards

 

Iván Macía

 

   _____  

De: insight-users-bounces+imacia=vicomtech.org at itk.org
[mailto:insight-users-bounces+imacia=vicomtech.org at itk.org] En nombre de
sami bourouis
Enviado el: viernes, 11 de enero de 2008 11:38
Para: insight-users insight-users; vtkusers vtkusers
Asunto: [Insight-users] principal curvature direction

 

Hi all
 
Please I need your help to compute crest lines (derivation, principal
curvatures and principal directions) on a mesh polydata or 3D image.

 

Thanks alot in advance.

 

   _____  

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