[Insight-developers] Detect holes in binary images

[Bradley Lowekamp]

Hello,

Hole come in a variety of shapes sized and definitions.  Depending on there exact morphological shape that you are interested in it may very how to detect them. ITK has a large number of morphological filter which can be used to.

At a basic level to get you started, I'd suggest inverting you binary image, with the NotImageFilter. Then running ConnectedComponentImageFilter, to give each isolated hole a unique label. Then the LabelStatisticsImageFilter to get basic size and shape information.

If additional morphological filtering is needed I'd recommend try out SimpleITK in Python, so that a large number of filters can be played with to get the desired filtered effect.

Hope that helps,
Brad

On Feb 7, 2014, at 7:32 AM, elhadj meljane <elhadj.meljane at gmail.com> wrote:

> Hi all,
> I would appreciate suggestions to detect holes in binary images. The
> holes are of different sizes (small medium).  I am not looking to fill
> these holes but just to detect their locations.
> 
> Thank you.
> 
> Best,
> Elhadj
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