Imfindcircles() detect circles which are not there..

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.

[KALYAN ACHARJYA]

Please attach image

[karishma koshy]

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.

Answer 1

[KALYAN ACHARJYA]

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.

[karishma koshy]

Dear Sir,

This is what I have got with my code. Can suggest me what to do with the code

[KALYAN ACHARJYA]

Is this ii?

You are trying to find circles on qq image (Not subtracted image). Where qq image is

ii=output_image - meanImage;
qq=fibermetric(ii,thic);

Can you share the qq with any one thic value or please do share ii?

[Image Analyst]

Attach the original image, not the screenshot with circles on it. And explain why you think there are circles on that image, since I don't see any.

[karishma koshy]

Dear Sir I'm attaching image of (qq) with thickness 70

[KALYAN ACHARJYA]

@Karishma As per my observation, there are 4 circles, and Matlab reflects the same, wait for @ImageAnalyst response.

centers =
  141.8160  133.8674
  330.0141  363.0124
  249.4681  372.3009
  379.7368  309.7466
radii =
   36.6470
   12.4704
   27.4104
   14.0341

[karishma koshy]

Dear sir can you please share the code the you have used.

[karishma koshy]

Dear sir can you please share the code you have used here.

[KALYAN ACHARJYA]

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!

[karishma koshy]

Thank you so much for your valuable time. Have a good day