[ITK] Determine surface area of certain region in image

[Matthias B]

Thank you for answering!
At this moment I get the perimeter in pixel units (not the surface area of my X,Y-data) of my labeled image.I have also really no idea how to use my 3D data with a labeled image. I see no way how to add 3D data to a LabelMap for example.
This is what I have at the moment.Dim labelShapeStatistics = New simple.LabelShapeStatisticsImageFilter()labelShapeStatistics.Execute(labelImage)Dim perimeterValue= labelShapeStatistics.GetPerimeter(1)
Thanks for any help, Matthias


From: blowekamp at mail.nih.gov
To: matthias.b at hotmail.com
CC: community at itk.org
Subject: Re: [ITK] Determine surface area of certain region in image
Date: Tue, 9 Aug 2016 15:58:56 +0000






Hello,



You should look into the label map framework [1]. In particular the LabelImageToShapeLabelMapFilter[2] and the Perimeter attribute [3] [4].



HTH,
Brad



[1] http://hdl.handle.net/1926/584
[2] https://itk.org/Doxygen/html/classitk_1_1LabelImageToShapeLabelMapFilter.html
[3] https://itk.org/Doxygen/html/classitk_1_1ShapeLabelObject.html#aff1209e925293c15775520ef89e97afb
[4] http://hdl.handle.net/10380/3342




On Aug 9, 2016, at 11:50 AM, Matthias B <matthias.b at hotmail.com> wrote:



Hello ITK-community,



At the moment I'm working with 3D Images with following structure: 100x80x3. Every pixel contains a X,Y,Z value.

I want to calculate the surface area of a certain region that I have defined with a boolean 2D-Image (100x80).
The surface area should only be calculated with the X,Y-data.



In Matlab I have experience with this by using the function bwboundaries on the boolean image. This function determines the indices of the the boundaries in clockwise direction.  Next I take the corresponding X,Y values of the indices so I can
 calculate the surface area with the function polyarea. 





Is this possbile with the ITK-library?



Thank you for your help guys.







Virusvrij. www.avast.com





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