[Insight-users] 3D skeleton/centerline

[Iván Macía]

Hi all,

 

You may want to have a look at the Digital Topology paper in Insight Journal
which does exactly that

HYPERLINK
"http://www.insight-journal.org/InsightJournalManager/view_reviews.php?back=
publications.php%3Fjournalid%3D6%26order%3Drating%26revision_display%3Dcombi
ned&pubid=120"http://www.insight-journal.org/InsightJournalManager/view_revi
ews.php?back=publications.php%3Fjournalid%3D6%26order%3Drating%26revision_di
splay%3Dcombined&pubid=120

 

It is scheduled to be incorporated probably in the next release

HYPERLINK
"http://www.itk.org/Wiki/ITK_Release_Schedule#High_Priority_2"http://www.itk
.org/Wiki/ITK_Release_Schedule#High_Priority_2

 

Best regards

 

Ivan Macia

 

   _____  

De: insight-users-bounces+imacia=vicomtech.es at itk.org
[mailto:insight-users-bounces+imacia=vicomtech.es at itk.org] En nombre de Ajay
Sonar
Enviado el: jueves, 24 de mayo de 2007 19:55
Para: Ruben Schilling
CC: insight-users at itk.org
Asunto: Re: [Insight-users] 3D skeleton/centerline

 

Hi Ruben,

 

I reffered to two papers to extract the centerlines,

 

A Robust Level-set algorithm for centerline extraction.

An augmented Fast marching method for computing skeletons and centerlines.

 

both from Joint EUROGRAPHICS - IEEE TCVG Symposium on Visualization (2002 -
2003).

 

I implimented this in matlab. I still have to figure out why i am not
getting a single voxel wide centerline and also want to see if i can fit a
line through the centerline voxels even if its not 1 voxel wide and use that
as reference. 

 

Ajay.

 

On 5/24/07, Ruben Schilling <HYPERLINK
"mailto:r.b.schilling at googlemail.com"r.b.schilling at googlemail.com> wrote: 

Hi Ajay, 


 

I actually want to do the same thing and have some questions and some
answers. I can share how I approach this problem at the minute. I use the
Danielsson Distance map from ITK to calculate a distance transform. You
would then have to extract local maxima from it, that correspond to your
skeleton. This approach requires preprocessing to fill wholes, which can be
done in itk via the iterative fill holes filter. 


 

My question:


 

I would like to have 1 voxel thin lines or even better: a discrete graph
extracted.


 

Can anyone tell me (us) how to do this?


 

Best

Ruben


 


 

 

Am 24.05.2007 um 16:27 schrieb Ajay Sonar:





Hi All,

 

I am new to ITK. Can anyone tell me if there is a way to extract the
skeleton lines/center lines from a stack of image slices. I have a set of
microCT images and i can get the surface or the voxel model from it in
MATLAB. I need to extract the skeleton lines from it. I tried a few things
but cannot get a single voxel width centerline. 

 

 

Thanks,

Ajay.


 

 

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