[Insight-users] [ITK Community] Automatically finding spheres in 3D images

[Bradley Lowekamp]

Ohh, yeah there are morphology techniques too.

I believe the top-hat[1][2] filter can also be very useful for detecting dark/black spots smaller the the structuring element.

[1] http://www.itk.org/Doxygen/html/classitk_1_1BlackTopHatImageFilter.html
[2] http://www.itk.org/Doxygen/html/classitk_1_1WhiteTopHatImageFilter.html

On Dec 18, 2013, at 9:05 AM, Matt McCormick <matt.mccormick at kitware.com> wrote:

> Hi Dave,
> 
> Binary morphological opening [1] may work well.  See, for example [2].
> 
> Hope this helps,
> Matt
> 
> [1] http://itk.org/Doxygen/html/classitk_1_1BinaryMorphologicalOpeningImageFilter.html
> [2] http://homepages.inf.ed.ac.uk/rbf/HIPR2/open.htm
> 
> On Wed, Dec 18, 2013 at 8:57 AM, David Cole <dlrdave at aol.com> wrote:
>>> Have you tried Hough transforms?
>>> 
>>> 
>> http://www.itk.org/Doxygen/html/classitk_1_1HoughTransform2DCirclesImageFilter.html
>> 
>> 
>> Not yet, but I will now, thanks very much!
>> 
>> 
>> D
>> 
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