[Insight-users] Segmentation question

[alex Dowson]

Hi

I tried already with otsu method but it gives me outer region of object because there is large area of white pixels and only small area of this black defects.

Any suggestion for the change in otsu method to ignore white area ?

Alex

 

From: Sergio Vera 
Sent: Tuesday, January 10, 2012 7:02 PM
To: alex Dowson 
Cc: itk ; Luis Ibanez 
Subject: Re: [Insight-users] Segmentation question

Look for otsu method. 
http://www.itk.org/Doxygen/html/classitk_1_1OtsuThresholdImageFilter.html  
or its cousin
http://www.itk.org/Doxygen/html/classitk_1_1OtsuMultipleThresholdsCalculator.html 

It should be pretty straightforward, looking at that image.

Best regards


On Tue, Jan 10, 2012 at 1:49 PM, alex Dowson <alexdowson at hotmail.com> wrote:

  Hi

  I am doing MicroCT application using ITK.  I want detecting defects in material with automatic threshold. Please check attached image that I shown two defects in materials.

  My question is using which filters I can detect this defects ?  I tried with LabelImage but it need threshold as input. I want to do automatic segmentation of this defects.


  Any help will be appreciated ...


  Alex


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