[Insight-users] looking for Watershed Boundary example

[SERIOT Rémi DEC/SPUA/LTEC]

Hi Josh,

Thanks for your help, I've got outlines of  my watershed labeled region. But
I have another question for you. 
my application looks like your example
(http://www . cs . utah . edu/~cates/watershed/) so I can adjust the flood level
of itk::RelabelWatershedImageFilter for create a good segmentation of my
image. But now I would like to suppress small catchments basins in my
labeled image. Actually it would be great if I could adjust the value of the
smallest catchments basins in order to create an optimum segmentation.

Thanks for your help!
 
Rémi
 

> -----Message d'origine-----
> De : Joshua Cates [mailto:cates at sci . utah . edu]
> Envoyé : lundi 2 juin 2003 18:12
> À : SERIOT Rémi DEC/SPUA/LTEC
> Cc : 'insight-users at public . kitware . com'
> Objet : Re: [Insight-users] looking for Watershed Boundary example
> 
> 
> Hi,
> 
> The watershed::Boundary and BoundaryResolver are actually only used =
to
> resolve global connectivities from local computations during =
streaming
> applications.  So the meaning of "boundary" in this case is 
> different from
> what you need.  I don't know of any quick way to generate 
> outlines of the
> labeled regions in ITK.  The 
> Examples/Segmentation/WatershedSegmentation1
> may give you some other ideas for visualization.  To generate 
> outlines,
> you may need to write your own code, but it shouldn't be 
> difficult. Keep 
> in mind, however, that boundaries are actually between pixels.
> 
> Josh.
> 
> ______________________________
>  Josh Cates			
>  School of Computer Science	
>  University of Utah
>  Email: cates at sci . utah . edu
>  Phone: (801) 587-7697
>  URL:   http://www . sci . utah . edu/~cates
> 
> 
> On Mon, 2 Jun 2003, SERIOT Rémi        DEC/SPUA/LTEC wrote:
> 
> > Hello everybody
> > 
> > I'm developing an example in order to segmentate an image 
> with the watershed
> > algorithm. I already write the code for create a labeled image, =
with
> > itk::watershed::WatershedSegmenter, 
> itk::watershed::SegmentTreeGenerator and
> > itk::watershed::Relabeler with the value of flood level. 
> > But now I would like to draw the boundary of each segmented 
> regions, I try
> > to use itk::watershed::Boundary and BoundaryResolver but I 
> can't find any
> > good example.
> > 
> > I'm a novice in itk so any suggestions or any example of 
> watershed::Boundary
> > and BoundaryResolver will be appreciate
> > 
> > Thanks for your help!
> > 
> > Rémi
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> > Insight-users at public . kitware . com
> > http://public . kitware . com/mailman/listinfo/insight-users
> > 
>