[Insight-users] Geodesic Active Contour giving negative levelset both inside and outside of vessel and padded boundary

[liza]

Hi Dan,

Thank you for your reply. My initial levelset does have negative values
inside the initial contour. And even in the result of the geodesic
ActiveContourLevelSetImageFilter, I am getting negative levelset inside of
my object. But the problem is I am getting negative levelset on the outside
of my object too. I have attached a result of my segmentation after
geodicactivecontourlevelsetimagefilter. 

Though I apply binary thresholding after this, I am getting things inside
aneurysm to be white and everything outside aneurysm to be white too and
then the image has black padding on the boundary. I have attached the result
of final binary threshold filter too. 

Thanks,
Liza...

I think this problem is occurring because the aneurysm geometry that I have
is acting as a hollow object rather than a solid object as we can see in the
result of sigmoid filter-(SigmoidResult.png)
<http://itk-insight-users.2283740.n2.nabble.com/file/n7583372/SigmoidResult.png>  

<http://itk-insight-users.2283740.n2.nabble.com/file/n7583372/Screenshot-5.png> 
<http://itk-insight-users.2283740.n2.nabble.com/file/n7583372/BinaryThresholdResult.png>  



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Liza
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