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Extraction of the number of circles by diameter

thread575-375300

Extraction of the number of circles by diameter

Extraction of the number of circles by diameter

(OP)
I think the job I am trying to make is relevant to image processing.

As you can see in the picture I attached,

There are many circles.

I want to get the size distribution of the circle by matlab. (x-axis: radius of the circle, y-axis: number of the circle)

Does anyone have any good idea to approach this task?




RE: Extraction of the number of circles by diameter

(OP)
No this is not for the school work but research problem.
I need to get the distribution for the structure modeling.

RE: Extraction of the number of circles by diameter

(OP)
Thanks for your comment.
yes. I tried to find a tool at Matlab exchange and PAS macro but I could only find a tool just measuring diameter manually.
If I do manually, I could count big circle but had problem for small one because of many numbers.
That's why I am trying to find automatically analyzing tool.

RE: Extraction of the number of circles by diameter

Attached is the processed result from ImageJ, which counted 275 white blobs

http://files.engineering.com/getfile.aspx?folder=4...
http://files.engineering.com/getfile.aspx?folder=5...

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RE: Extraction of the number of circles by diameter

(OP)
Thank you so much.
It wasn't easy for me (have done usually fabrication only for researches) to do such a analyzation using this computer software things.
I studied ImageJ and I was quiet surprised of its ability.
So happy that now I can go home.

Thank you again.

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