[Insight-users] Segmentation question

[Navneeth Subramanian]

For 1) Neither a thresholding or connected component method will suit
you. This is because the nasal cavity connects both the air on the out
side of the body & the inside (lungs). Try it out & you will see what
I mean.
2) For 2 you may observe the same challenge as in 1, on a case-by-case basis.

Your best option is to try a slice-wise active contour to extract the
body outline. However note that you will encounter 2 contours near
slices corresponding to the limbs.

hope this helps,
navneeth

On Tue, May 1, 2012 at 3:19 AM, Jonathan Morra <jonmorra at gmail.com> wrote:
> I have CT of various regions of the body and am interested in doing 2 types
> of segmentations.
>
> 1.  I would like to segment the outline of the body from the table the
> patient is laying on, and the air
> 2.  I would like to segment the lung
>
> I am very new to ITK and was hoping someone could suggest some good
> algorithms to start with.  For the body segmentation, I assume a very crude
> thresholding and smoothing would be OK, but I'm not sure.
>
> For the lung, I assume a seed point would be placed inside of each lung.
>
> Thanks
>
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