[ITK] MATLAB bwareaopen() equivalent in ITK

[Girish, Gavaskar Ruturaj]

Dear Jon,
Thanks for your reply. I am looking for a filter which will remove all white objects containing less than a specified number of pixels, regardless of their shape. I am not sure if morphological operations, which the filters you mentioned are using, will be fully successful as the result will also depend on the objects’ shape. Is there a way to ‘threshold’ objects based on their size (no. of pixels), possibly even involving multiple filters?
Thanks & Regards,
Ruturaj

From: Jon Haitz Legarreta [mailto:jhlegarreta at vicomtech.org]
Sent: Tuesday, May 20, 2014 2:06 PM
To: Girish, Gavaskar Ruturaj
Cc: community at itk.org
Subject: Re: [ITK] MATLAB bwareaopen() equivalent in ITK

Dear Ruturaj,
binary math morphology filters [1] will be of help for this task. The itk::BinaryOpeningByReconstructionImageFilter [2] is probably the filter you are looking for.
HTH,
JON HAITZ

[1] http://www.itk.org/Doxygen/html/group__ITKBinaryMathematicalMorphology.html
[2] http://www.itk.org/Doxygen/html/classitk_1_1BinaryOpeningByReconstructionImageFilter.html

On 20 May 2014 10:09, Girish, Gavaskar Ruturaj <gavaskar.ruturaj.girish at philips.com<mailto:gavaskar.ruturaj.girish at philips.com>> wrote:
Dear all,

Is there a class in ITK which provides functionality to remove small white objects in a binary image, similar to the function bwareaopen() in MATLAB? If not, how can this be done?

Thanks & Regards,
Ruturaj

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