[Insight-users] LabelDiameter

[Luis Ibanez]

Hi Pietro,

The following suggestion will not prevent your airways
label segmentation from having bigger diameters in
the lower branches, but it should help you detect
if it happens.

Take the label image, compute a signed distance map
from it, and then use the Minimum / Maximum image
filter to detect local extrema.

If the diameters were monotonically decreasing,
you shouldn't find any extrema in the distance map
(at least in theory.... the discretionary may artificially
create some though...).


    Luis


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On Mon, May 28, 2012 at 11:12 AM, Pietro Nardelli <pie.nardelli at gmail.com>wrote:

> Hi all,
>
> I have a question: does exist a function to compute the diameter of a
> volume label? I'm segmenting the airway of the lung and I need to be
> sure that the label's diameter of the deepest branches isn't greater
> than the diameter of the higher ones.
>
> Thank you very much,
>
> Pietro
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