[Insight-users] Fast Marching for arbitrary interfaces

[Luis Ibanez]

Hi Amardeep


The implementation of FastMarching in ITK is initialized using
seed points.

If you already have an initial front (as opposed to a set of
seed points) then you can use the

               ShapeDetectionLevelSetImageFilter

and set the curvature weight to zero. In those conditions this
filter will preform a front propagation similar to Fast Marching.



     Regards,


        Luis




-------------------
Amardeep Singh wrote:
> Dear ITK-users
> 
> In the current implementation of the fast marching filter, the initial 
> surface that is to be propagated
> has to be a binary interface (Please, correct me if I'm wrong).
> I am wondering if there is a way to apply the fast marching filter in 
> ITK to arbitrary inital fronts as it is described
> by Sethian in his paper "A fast marching level set method for monotonically
> advancing fronts" (PNAS, February 1996). If such a functionality does 
> not exist at the moment:
> Would you agree that the itkIsoContourDistanceImageFilter might be a 
> good starting point to implement the initial
> calculation of the signed distances to some arbitrary isosurface? These 
> distances might then be used for the fast marching propagation as 
> described by Sethian.
> 
> Thanks a lot!
> 
> Best regards
> Amardeep
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