[vtkusers] image island removal and hole filling

[David Gobbi]

For Step 1, I have a VTK flood-fill class that do the job.  I'll upload it
to
gerrit so that you can try it out.  I don't think anything exists for your
Step 2, though.

  David


On Thu, Dec 2, 2010 at 3:14 PM, Jonathan Morra <jonmorra at gmail.com> wrote:

> I have a binary vtkImageData class and I want to do 2 things with it, and I
> don't know how.
>
> 1.  I want to remove all islands from the image except one.  I want to
> identify the island not to be removed by a pixel location.  I have seen
> vtkImageIslandRemoval2D, and I don't think that'll work for me, because I do
> not know anything about the island's size that I want to keep (it could be
> big, small, or in the middle), all that I know is one point which
> is guaranteed to be interior to one island, and that's the island I want to
> keep.
>
> 2.  I want to do hole filling on the output of step 1 and I don't know how
> to do that.  I saw vtkFillHolesFilter but that appears only to work on poly
> data.  I'd like something analogous to that for vtkImageData.
>
> If anyone knows how to do these things, I'd appreciate it.  Also, if it
> matters, I'm coding in Java.
>
> Thanks
>
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