[Insight-users] Binary Image segmentation

[John Hiller]

Hi

I'm not too sure if those filters are what I need since I'm trying to get
the user to select seed points on any black holes he sees and I dont see any
'addSeed'
mechanism for those filters.

In the examples, there is:
  filter->SetRadius( indexRadius )

would that be a seed point from the image?
Or does this filter look at the whole image and finds black wholes to get
rid of?

Thanks
John

On Mon, Sep 26, 2011 at 8:48 AM, Sergio Vera <sergio.vera at alma3d.com> wrote:

> Hi
>
> Your second region growing step, performed on the binary image is messing
> your segmentation. To fill holes in  binary images try
>
> itk::VotingBinaryHoleFillingImageFilter
> or itk::VotingBinaryIterativeHoleFillingImageFilter
>
> Regards
>
> On Sun, Sep 25, 2011 at 6:00 PM, John Hiller <john.hiller53 at gmail.com>wrote:
>
>> Hi ITK users,
>>
>> From what I can understand, segment dicom images using a region growing
>> segmentation filter (confidence connected to be specific) will construct a
>> binary image.
>>
>> After I do that kind of segmentation, I view the binary image in vtk and
>> then I try to carry out the same segmentation filter on that binary image so
>> that I can fill up any black holes
>> lingering around in the image. I want to do this because of the easiness
>> of adding seeds with confidence connected filter.
>>
>> However, I dont exactly get the result I want, what appears is just a
>> white window, all white.
>>
>> Is it not possible to segment binary images, are there alternatives to get
>> rid of black holes in segmentation result where I can use my adding seed
>> interface quite easily. I'm  using vtk to get
>> the user to click on the image to add their seeds and I was hoping that I
>> could do the same for those black holes.
>>
>> Thanks,
>> John
>>
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>
>
> --
> Sergio Vera
>
>  Alma IT Systems
>  C/ Vilana, 4B, 4º 1ª
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>
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