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Imfindcircles() detect circles which are not there..

Asked by karishma koshy on 14 Jul 2019
Latest activity Edited by Image Analyst
on 14 Jul 2019
I'm trying to use imfindcircles setting minimum and maximum radii. I have even mentioned the method and object polarity in the command. Still it detect falsely.
How can I solve this.

  2 Comments

Please attach image
The original image was a 1000 frames of Tiff image. I have attached the subtracted image I have obtained after averaging and also the code I have done so far.
Thanking you in advance for your kind advices.

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1 Answer

Answer by KALYAN ACHARJYA on 14 Jul 2019
Edited by KALYAN ACHARJYA on 14 Jul 2019

When I checked imfindcircles on subtracted image (all pixels 255), I didnot get any circles.
im=imread('subtracted.png');
Rmin=10;
Rmax=65;
[centers,radii]=imfindcircles(im,[Rmin Rmax])
I have tried with different values Rmin and Rmax too.
Result:
centers =
[]
radii =
[]
[] represents empty.

  9 Comments

Dear sir can you please share the code you have used here.
I saved the shared image(imf.png) as qq.png
im=imread('qq.png');
Rmin=10;
Rmax=65;
[centers,radii]=imfindcircles(im,[Rmin Rmax]);
Learning is an ongoing process, lets keep trying and keep learning!
Good Night!
Thank you so much for your valuable time. Have a good day

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