Macro to avoid internal circles ( Hough transform detection )

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Macro to avoid internal circles ( Hough transform detection )

peppetin
Hello guys,

I am performing a circles detection with Hough transformation and it could be so accurate . Now I have a problem dealing with detected small circles inside a bigger circle .  
Bigger circle detection is perfect but all the circles inside are fake so I'd like to run a macro that should be deleted internal circles once a bigger circle has been detected .
Could you give any advices and ideas ?

In attachment there is a picture in order to better understand the matter :particle_recognition.png

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Re: Macro to avoid internal circles ( Hough transform detection )

Walt Mankowski
I'm not sure if you also want to deal with intersecting circles, but
this page might be helpful:

http://stackoverflow.com/questions/8367512/algorithm-to-detect-if-a-circles-intersect-with-any-other-circle-in-the-same-pla

Another thought might be to set a threshold to avoid the small
circles.

Walt

On Wed, Apr 19, 2017 at 05:45:00AM -0700, peppetin wrote:

> Hello guys,
>
> I am performing a circles detection with Hough transformation and it could
> be so accurate . Now I have a problem dealing with detected small circles
> inside a bigger circle .  
> Bigger circle detection is perfect but all the circles inside are fake so
> I'd like to run a macro that should be deleted internal circles once a
> bigger circle has been detected .
> Could you give any advices and ideas ?
>
> In attachment there is a picture in order to better understand the matter :
> particle_recognition.png
> <http://imagej.1557.x6.nabble.com/file/n5018573/particle_recognition.png>  
>
>
>
>
>
> --
> View this message in context: http://imagej.1557.x6.nabble.com/Macro-to-avoid-internal-circles-Hough-transform-detection-tp5018573.html
> Sent from the ImageJ mailing list archive at Nabble.com.
>
> --
> ImageJ mailing list: http://imagej.nih.gov/ij/list.html

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