[Insight-users] How to get intermediate steps of a Filter

[Luis Ibanez]

Hi One Zero,


Yes, you can get access to the LevelSet image computed
at every iteration of the GeodesicActiveContourFilter.

In order to do this, you should connect a Command/Observer
to the filter, and set it upt to listen for the IterationEvents.

At every iteration you can take a look at the Output of the
filter.

Note that you should *not* attempt to change that output in
any way, nor to trigger an update on its values, since the
filter is in the middle of its execution.

For details on how to use Command/Observers, please read
the ITK Software Guide

     http://www.itk.org/ItkSoftwareGuide.pdf

For a source code example on how to look at the intermediate
values of a LevelSet, please look at the code in the
following applcations:


             InsightApplications/
                              SNAP


and

             InsightApplications/
                ThresholdSegmentationLevelSetFltkGui/



   Regards,


      Luis


--------------
One Zero wrote:
> Hello!,
> I have the next question:
>  I i'm using for example de Geodesic Active Contour Filter, it suposes
> to make a series of steps until it get the final solution, which is
> the definitive contour make in the segmentation process. There is a
> way to get an image of each of this steps???.
> 
> Thanks
> --
> OnezeroisinthehousE
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> 
>