[Insight-users] 3D level set segmentation

[Luca Antiga]

Dear Gokhan,
  geodesic active contours have been widely used even in large  
datasets (surely larger than the ones you're mentioning), provided  
you have enough memory available.
One of two things may be happening:
1. you're not running out of memory and your operative system starts  
swapping on the virtual memory
2. there's a problem with the way you extended the code to 3D.
The first point is easy to check (just look at a memory monitor or  
listen to the sounds emitted by your hard drive). For the second,  
you'll have to post a code snippet for us to take a look.
Regards

Luca



On Jul 18, 2008, at 4:35 PM, Gokhan Mustafa Uzunbas wrote:

> Dear ITK users I am tring to do a level set based segmentation  
> using GeodesicActiveContourImageFilter.cxx sample in ITK. 2D works  
> fine but when I try on 3D data I observed that fast marching filter  
> can not initialize a simple sphere although I gave seed points and  
> radius. It gets in a while loop in FastMarchingImageFilter to  
> compute a signed distance function and can not get out.
> I do not know how much more I should wait but it seems it is not  
> usable when image dimensions are 500 x 500 x 25.
> Are there anyone who could succeed to run those segmentation  
> filters in 3D?
> If anyone could help or point me, please? Thank you in advance.
>
> Gokhan
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