<div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><a href="http://www.itk.org/Doxygen/html/group__MathematicalMorphologyImageFilters.html">http://www.itk.org/Doxygen/html/group__MathematicalMorphologyImageFilters.html</a><br>
</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small"><br></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">What you probably want to do is BinaryErode and BinaryDilate.</div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Wed, May 22, 2013 at 7:04 AM, gib <span dir="ltr"><<a href="mailto:g.bogle@auckland.ac.nz" target="_blank">g.bogle@auckland.ac.nz</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">It's hard to know what to call the processing I want to apply. I have a set<br>
of biological images (actually a 3D image, but for now I'm happy to process<br>
the frames one-by-one) in which the region of interest has an irregular and<br>
incomplete labelled layer around the boundary. The staining of the layer<br>
was unintended, and its presence interferes with the segmentation that I am<br>
doing. The part of the image that I want to extract is made up of many<br>
disconnected objects, and there is not much difference in the intensity<br>
ranges of the objects of interest and the unwanted edge. I am willing to<br>
trim a few pixels off the boundary all the way around - this will not cause<br>
much loss of information. What I need is way to determine a sequence of<br>
pixels that in some sense defines the extent of the labelled region in the<br>
image, rather like a 2D shrink wrapping. I could then use this to shave or<br>
peel off the outer layer of pixels.<br>
<br>
Does this process have a name? Are there any existing filters or code to do<br>
this? Any clever suggestions (I have some ideas)?<br>
<br>
Thanks<br>
Gib<br>
<br>
<br>
<br>
--<br>
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