[Insight-users] ThresholdSegmentationLevelSet example

[Luis Ibanez]

Hi Lara,

This is something that has to be fixed in this example.

Right now, only point seeds are placed, and as Josh
described, they simply collapse on the initial iterations.

Probably the easiest way is to take the seeds as input
to a DistanceMap and then subtract a value to the map,
so the zero set is at certain distance from the seed.

I'll let you know when these changes are done and
ready to be used.

Thanks for pointing this out.

Luis


============================================

Lara Vigneron wrote:

> Hi everybody,
> 
> I am looking  for information about the ThresholdSegmentationLevelSet 
> example.
> 
> I was reading the following message from Josh Cates (in 
> http://www.itk.org/pipermail/insight-users/2002-September/001141.html)
> 
> /Just a couple of tips using this filter:  Your initialization should be a/
> /closed surface such as a sphere or a box.  A single point or line will/
> /disintigrate under its own curvature after only a few iterations.  The/
> /key/
> /to getting good results is obviously to find the correct threshold/
> /parameters, which will be a trial and error process for your dataset./
> 
> Does anybody out there know how one can actually initialize the level 
> set with a sphere or a box when one uses the GUI in this example?//
> 
> Thanks a lot,
> 
> Lara
> // 
> 
> -- 
> Lara VIGNERON
> 
> Signal Processing Group
> 
> University of Liege
> Institut Montefiore
> Sart-Tilman, Batiment B28
> B-4000 Liege
> BELGIUM
> 
> Tel: +32-(0)4-366.26.42
> Fax: +32-(0)4-366.29.84
> Lara.Vigneron@ulg.ac.be
> 
>