Hi Alexandre, <br>thank you for your response. <br><br>1) Segmentation<br> I am looking for some algorithm based on region
growing,edge detection, split-and merge, waterfall
(<a href="http://en.wikipedia.org/wiki/Segmentation_%28image_processing%29">http://en.wikipedia.org/wiki/Segmentation_%28image_processing%29</a>) or
other 'shape' segmenting algorithm for polygonal meshes (prefered data formats obj, ply ) that could be used for
segmenting mesh into 'smooth' (having relative curvature within region
under some treshold) surfaces /regions/.<br>Reference article could be "Partitioning 3D Surgace Meshes Using Watershed Segmentation" by Mangan and Whitaker. <br><br>2) Curvatures<br>I read article in the mention journal, but i can not find there a reference article for Meyer02 ? Which article is meant by this ?<br>
I already tested vtkCurvature on great part of known Stanfords polygonal meshes and curvatures scalar ranges are really .. really high, I would like try other existing possibilitites before potential reimplementing or tresholding. I will try to check mention class, thanks again.<br>
<br>Is there some example for computing curvature with tensors in itk ? <br>
<br>Best regards, <br>Jana<br><br><div class="gmail_quote">On 10 May 2012 12:11, Alexandre GOUAILLARD <span dir="ltr"><<a href="mailto:agouaillard@gmail.com" target="_blank">agouaillard@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">dear jana,<br>
<br>
As far as I know, there is no waterfall based segmentation. Can you<br>
send me a link to the article you are thinking about?<br>
<br>
Class to compute discrete surface mesh curvature have been contributed:<br>
<a href="http://www.insight-journal.org/browse/publication/302" target="_blank">http://www.insight-journal.org/browse/publication/302</a><br>
<br>
and are now in ITK:<br>
<a href="http://www.itk.org/Doxygen41/html/classitk_1_1DiscreteMeanCurvatureQuadEdgeMeshFilter.html" target="_blank">http://www.itk.org/Doxygen41/html/classitk_1_1DiscreteMeanCurvatureQuadEdgeMeshFilter.html</a><br>
You can start by looking at:<br>
/Modules/Filtering/QuadEdgeMeshFiltering/test/itkDiscreteMeanCurvatureQuadEdgeMeshFilterTest.cxx<br>
<br>
you have also the possibility to compute the principal curvatures and<br>
work with the tensor directly.<br>
<br>
regards,<br>
<br>
alex.<br>
<div><div class="h5"><br>
On Wed, May 9, 2012 at 11:14 PM, Jana Sefcikova <<a href="mailto:neollie@gmail.com">neollie@gmail.com</a>> wrote:<br>
> Dear users,<br>
><br>
> I would like ask whether itk supports<br>
> 1) some waterfall based segmentation for polygonal mesh according to<br>
> something like curvature or other metric<br>
> 2) some class for computing curvature (mean) for meshes<br>
> If yes, could you share with me class names (and if some example for<br>
> starting point)<br>
><br>
> Thank you<br>
><br>
> Jana<br>
><br>
</div></div>> _____________________________________<br>
> Powered by <a href="http://www.kitware.com" target="_blank">www.kitware.com</a><br>
><br>
> Visit other Kitware open-source projects at<br>
> <a href="http://www.kitware.com/opensource/opensource.html" target="_blank">http://www.kitware.com/opensource/opensource.html</a><br>
><br>
> Kitware offers ITK Training Courses, for more information visit:<br>
> <a href="http://www.kitware.com/products/protraining.php" target="_blank">http://www.kitware.com/products/protraining.php</a><br>
><br>
> Please keep messages on-topic and check the ITK FAQ at:<br>
> <a href="http://www.itk.org/Wiki/ITK_FAQ" target="_blank">http://www.itk.org/Wiki/ITK_FAQ</a><br>
><br>
> Follow this link to subscribe/unsubscribe:<br>
> <a href="http://www.itk.org/mailman/listinfo/insight-users" target="_blank">http://www.itk.org/mailman/listinfo/insight-users</a><br>
><br>
</blockquote></div><br>