MATLAB: How to detect overlapping circles

Question

I have a picture of overlapping circles. How do I detect the circles?

Answer 1

The function 'imfindcircles' should be the most promising path.

https://www.mathworks.com/help/releases/R2018b/images/ref/imfindcircles.html

Please see the attached sample code.

Please note that you might need to play around with the parameter set in order to get a more accurate result.

Also, the Circle Finder app on the File Exchagne is can be quite useful:

https://www.mathworks.com/matlabcentral/fileexchange/34365-circle-finder

Please also refer to the blog post below for more information:

https://blogs.mathworks.com/steve/2012/09/04/detecting-circular-objects-in-images/