[Insight-users] LabelDiameter

[Pietro Nardelli]

Hi again Luis,

thank you, this suggestion seems perfect! I'll try ti use it: if I got
it right, to compute a signed distance map I have to use the
SignedDanielssonDistanceMapImageFilter. Am I correct?

Thanks a lot,

Pietro

2012/5/28 Luis Ibanez <luis.ibanez at kitware.com>:
> 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
>
>
> -------------------------------------------------------------
> 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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