[Insight-users] itk LevelSetsv4

[cagatay bilgin]

Thank you very much for the clarifications
and the pointers Matt. I checked out the
latest release a couple of hours ago and
see a lot of changes as you pointed out.

There is a GeodesicActiveContour class in
the (old) LevelSet directory, which makes me
believe that it wouldn't be too hard to come up
with the corresponding term class for the new
LevelSet framework. It is still not clear to me
how to accomplish this though, I am completely
puzzled with how it was done before.

Cagatay

On Thu, Dec 8, 2011 at 6:49 PM, Matt McCormick
<matt.mccormick at kitware.com>wrote:

> Hi Cagatay,
>
> On Thu, Dec 8, 2011 at 8:55 PM, cagatay bilgin <bilgincc at gmail.com> wrote:
> > I am trying to understand the new level set framework
> > and willing to use it in our project. Being able to add
> > terms to the level set function would be really helpful
> > I think. Is this the direction that ITK will be taking ?
>
> Yes, the new level sets frame takes that direction, and it is a
> flexible and powerful approach that allows for new avenues of
> research.
>
> > I see two directories LevelSets and LevelSetsv4, one
> > having term classes and the other not having them
> > which makes me wonder how the framework will be
> > working. It is a little hard to find directions and documentation
> > for me as the framework is still being developed.
>
> Currently, the old levelsets framework is in the ITKLevelSets module,
> and the new framework is in the ITKLevelSetsv4 module.  They are not
> compatible, and the term-based framework is ITKLevelSetsv4.
>
> Suggestions for disambiguation of the old and new framework are welcome.
>
> >
> > I am trying to build an application that implements the
> > geodesic chan vese algorithm which uses the internal
> > and external terms from the chan vese algorithm and
> > would also include the gradient information from the
> > geodesic active contours to snap to the edges better.
>
> The Chan and Vese internal and external terms have been implemented.
> An advection term is in the works:
>
>  http://review.source.kitware.com/#change,2914
>
> Arnaud may have better suggstion on how to proceed with the
> implementation you desire.
>
> You may find the MICCAI tutorial useful.
>
>  http://midas.kitware.com/community/view/65
>
> There is a copy of the presentation, but also a VirtualBox virtual
> machine containing the code and examples.
>
> The code has evolved since MICCAI.  Most notably, the api has been
> greatly simplified by not requiring different component class names to
> correspond to each type of level set datatype (dense image, Shi,
> Whitaker, Malcolm).
>
> Thanks,
> Matt
>
>
> > Should I be working on the filters defined in LevelSets
> > or in LevelSetsv4? Is there a geodesic term class
> > defined somewhere that I can use with other terms in
> > LevelSetsv4 directory ?
> >
> > Any help would be appreciated
> >
> > Thank you,
> > Cagatay
> >
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