[Insight-users] Question about SignedMaurerDistanceMapImageFilter

[Bradley Lowekamp]

Have you looked at filling the wholes caused by you contours with an algorithm such as BinaryFillholeImageFilter or a RegionGrowing methods? This hopefully will make the image compliant with the expected input to the signed distance function.

Brad


On Apr 26, 2012, at 8:13 AM, anna han wan wrote:

> Hi
> 
> I am using SignedMaurerDistanceMapImageFilter to compute the distance map of my 3D images in which I have shapes like empty spheres and cubes(only the contour).
> 
> My question is similar to the question asked in http://www.itk.org/pipermail/insight-users/2007-September/023496.html.
> 
> I want to have negative distance values inside the sphere and positive outside the sphere knowing that I don’t want to fill in my contour.
> 
> Is there any way to do that?
> 
> Also what’s the role of function setInsideIsPositive ? can you give me more explanation that the one provided  in the class number definition?
> 
I believe this toggles when the inside is positive, and the outside negative and visa versa.

> Thanks
> 
> Anna.
> 
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========================================================
Bradley Lowekamp  
Medical Science and Computing for
Office of High Performance Computing and Communications
National Library of Medicine 
blowekamp at mail.nih.gov



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