[Insight-users] handle watershed oversegmentation

[Richard Beare]

Hi,
You can also check the watershed approach using markers. The tutorial
is at http://hdl.handle.net/1926/202 and the filter
(itkMorphologicalWatershedFromMarkersImageFilter) is available as part
of itk, if you build using the review option.

If you don't have many objects to segment then you can easily test
feasibility of segmenting this way by manually drawing a marker for
each object of interest, as well as one or more background markers.


On Mon, Jan 24, 2011 at 3:39 AM, igor schneider <inornden at googlemail.com> wrote:
> Hi,
>
> i'm using WatershedImageFilter, but oversegmentation occurs.
>
> I want to join segments that are very small to their bigger neighbors (if
> they have more then x touching pixels).
>
> So i basically want to:
>  - join two given labels in a LabelImage
>  - measure how much two labels in a LabelImage touch each other
>
> Is there a way to do this nice and easy in itk?
>
> Or, if you have another approach to handle oversegmentation, please also
> tell me.
>
> Cheers
> Igor
>
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