[Insight-users] Determine Euler number of binary image in ITK (similar to bweuler in Matlab)

[Buuren, T.P.H. (Thomas) van]

Sergio, thank you for the response. As you said, it was pretty straightforward.

For the record: I calculated the Euler number like this given a label image:


  1.  isolate the cluster/component using BinaryThresholdImageFilter
  2.  calculate a version with possible holes filled using BinaryFillHoleImageFilter
  3.  Use XORImageFilter between the two results in an image with only the holes
  4.  Use ConnectedComponentImageFilter to count the holes.

The resulting Euler Number  is 1 -  nrHoles.

________________________________
From: Sergio Vera [mailto:sergio.vera at alma3d.com]
Sent: woensdag 5 oktober 2011 17:01
To: Buuren, T.P.H. (Thomas) van
Cc: insight-users at itk.org
Subject: Re: [Insight-users] Determine Euler number of binary image in ITK (similar to bweuler in Matlab)

Hi Thomas

To my knowledge, a single filter that does that calculation does not exists, but it should be pretty straightforward to do by using the label manipulation filters that you may use if you compile ITK with ITK_REVIEW set to true.

Regards
On Wed, Oct 5, 2011 at 2:46 PM, Buuren, T.P.H. (Thomas) van <thomas.vanbuuren at tno.nl<mailto:thomas.vanbuuren at tno.nl>> wrote:

Does anyone know if there is a way in ITK to determine the Euler number of a binary image, similar to the Matlab's  bweuler(...) ?

Thank you,
Kind Regards
Thomas
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Sergio Vera

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