Hello All<div><br></div><div>The article that Xiapeng referenced only work with binary images, not with polygonal representations of tubes. Also, standard thinning produces way too spurious branches  to be really useful. If you have tubular data and need it&#39;s centerline I strongly recommend flux based centerline calculation: <a href="http://www.insight-journal.org/browse/publication/165">http://www.insight-journal.org/browse/publication/165</a></div>
<div><br></div><div><a href="http://www.insight-journal.org/browse/publication/165"></a>How ever, if you have polygonal data as input, AFAIK, VMTK has tools to calculate centerlines based on this knid of representation, but I&#39;m not 100% sure.<br>
<br><div class="gmail_quote">On Tue, Nov 9, 2010 at 1:18 AM, Xiaopeng Yang <span dir="ltr">&lt;<a href="mailto:yxp233@postech.ac.kr">yxp233@postech.ac.kr</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
Hi Caitlin,<br>
<br>
You can try a 3D thinning algorithm published in the Insight Journal:<br>
<br>
<a href="http://www.insight-journal.org/browse/publication/181" target="_blank">http://www.insight-journal.org/browse/publication/181</a><br>
<br>
Xiaopeng<br>
<br>
-----邮件原件-----<br>
发件人: <a href="mailto:vtkusers-bounces@vtk.org">vtkusers-bounces@vtk.org</a> [mailto:<a href="mailto:vtkusers-bounces@vtk.org">vtkusers-bounces@vtk.org</a>] 代表 Caitlin Schneider<br>
发送时间: 2010년 11월 9일 화요일 오전 8:31<br>
收件人: <a href="mailto:vtkusers@vtk.org">vtkusers@vtk.org</a><br>
主题: [vtkusers] creating centerlines of tubes<br>
<div><div></div><div class="h5"><br>
Hello,<br>
<br>
I currently have a polydata representation of a vascular tree and<br>
would like to create a centerline skeleton from this data set (that<br>
can be used in the future for registration purposes).  Is there a<br>
straightforward way to create these centerlines?<br>
<br>
thank you,<br>
Caitlin<br>
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