Finding circle in image

Hi,

I'm trying to fit a circle to an image in MATLAB, I have processed the image a little for better contrast but now there is a very bright white spot which imfindcircles focuses on but I want the slightly darker circle in this image to be fitted, any ideas?

Answer 1

[Rohit Pappu]

Please refer to the following answer for some tips on how to improvecircle detection using regionprops

https://www.mathworks.com/matlabcentral/answers/334096-why-does-imfindcircles-not-find-circles-in-my-image#answer_262079

[Megan Joseph]

Thanks! I'll give that a try.