[Insight-users] Peel an image

[Dženan Zukić]

http://www.itk.org/Doxygen/html/group__MathematicalMorphologyImageFilters.html

What you probably want to do is BinaryErode and BinaryDilate.


On Wed, May 22, 2013 at 7:04 AM, gib <g.bogle at auckland.ac.nz> wrote:

> It's hard to know what to call the processing I want to apply.  I have a
> set
> of biological images (actually a 3D image, but for now I'm happy to process
> the frames one-by-one) in which the region of interest has an irregular and
> incomplete labelled layer around the boundary.  The staining of the layer
> was unintended, and its presence interferes with the segmentation that I am
> doing.  The part of the image that I want to extract is made up of many
> disconnected objects, and there is not much difference in the intensity
> ranges of the objects of interest and the unwanted edge.  I am willing to
> trim a few pixels off the boundary all the way around - this will not cause
> much loss of information.  What I need is way to determine a sequence of
> pixels that in some sense defines the extent of the labelled region in the
> image, rather like a 2D shrink wrapping.  I could then use this to shave or
> peel off the outer layer of pixels.
>
> Does this process have a name?  Are there any existing filters or code to
> do
> this?  Any clever suggestions (I have some ideas)?
>
> Thanks
> Gib
>
>
>
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