[Insight-users] Region growing criteria based only on region boundary?

[Karthik Krishnan]

On Wed, Aug 5, 2009 at 2:34 PM, David Doria
<daviddoria+itk at gmail.com<daviddoria%2Bitk at gmail.com>
> wrote:

>
> Looking at ConnectedThresholdImageFilter.txx, it seems like maybe I have to
> define my own *Function class, so
>
>   typedef BinaryThresholdImageFunction<InputImageType, double>
> FunctionType;
> could be changed to something like:
>   typedef RegionBoundaryDifferenceFunction<InputImageType, double>
> FunctionType;
>
> The details of RegionBoundaryDifferenceFunction would just be finding the
> boundary points in the existing region that are neighbors of the query pixel
> and seeing if they all meet a criteria. Is this close to where I should be
> headed?


That's absolutely right. You'll need to write your own ImageFunction class..
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