Hi Vdoo,
the usual algorithm for finding shapes like circles is named (generalized) Hough transform.
The Hough_Circles plugin is for circles of fixed size; but there are other Hough plugins, maybe you find a suitable one.
Michael
________________________________________________________________
On Oct 28, 2014, at 17:41, vdoo wrote:
> Hi all,
> I found that ImageJ has a edge detection plugin.
> But I want a circle object detection tool to calculate the diameter of the circle in a picture.
>
> I don't know if anyone has implemented such a plugin.I will appreciate your reply if you can give me some hints (Plugin or Algorithm).
>
> Thanks and best regardsVdoous.
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