Re: FitCircle circle-fitting class

Posted by Johan Henriksson-2 on Sep 11, 2009; 6:18am
URL: http://imagej.273.s1.nabble.com/FitCircle-circle-fitting-class-tp3691194p3691195.html

I see that you have one that searches all of (a,b,R). how do these
compare to the classic algorithms based on hough transform?

/Johan

Michael Doube wrote:

> Hi all
>
> I've been working on a Java port of some MATLAB scripts that fit
> circles to data.  I originally started it to find a good method to
> work out radii of curvature, and it's grown (since Monday) to be
> something that might be useful to other people.
>
> The algorithms are described in detail by Nikolai Chernov on his page,
> http://www.math.uab.edu/~chernov/cl/MATLABcircle.html
>
> It includes Chernov's Hyper non-biased algebraic (non iterative, fast
> and accurate) circle fitting method and a couple of the geometric
> methods.
>
> The class is designed to be generic, and I've written an example
> testing plugin, here: http://doube.org/files/Test_Circle.java
>
> If you'd like to check it out, I've posted an initial, mostly-working
> version at http://doube.org/files/FitCircle.java
>
> It's also in my git repo, http://github.com/mdoube/BoneJ/tree/master.
>
> Cheers,
>
> Mike

--
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Johan Henriksson
MSc Engineering
PhD student, Karolinska Institutet
http://mahogny.areta.org http://www.endrov.net