[Insight-users] level set question

[Luca Antiga]

Hi Loic,
  I assume you're talking about  
itk::GeodesicActiveContoursLevelSetImageFilter.
You can set the advection field by
- calling levelSetFilter->AutoGenerateSpeedAdvectionOff()
- defining a speed image and setting it to the level set filter using  
SetSpeedImage (this is basically P(x))
- defining a vector image and setting it to the level set filter  
using SetAdvectionImage (this is A(x))
As to Z(x), it is set internally to P(x) in all current itk level set  
filters. Currently you can only override this
behavior by subclassing itk::GeodesicActiveContoursLevelSetFunction.
Regards

Luca



On Jul 15, 2008, at 11:59 AM, BOURGEOIS Loic wrote:

> Hi everyone,
>
> I have a question (again) on level set segmentation in ITK. A speed  
> image is required to the level set filter. But is it possible to  
> put independently the advection term A(x), the propagation  
> (expansion) term P(x) and the spatial modifier term Z(x) in the  
> filter ?
>
> Thank you in advance,
>
> Loic
>
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