I need to fit a best circle to the 3D data in matlab -


basically, have many irregular circle on ground in form of x,y,z coordinates (of 200*3 matrix). want fix best circle in data of x,y,z coordinates (of 200*3 matrix).

any appreciated.

i try using ransac algorithm finds parameters of model (in case circle) given noisy data. algorithm quite easy understand , robust against outliers.

the wikipedia article has matlab example fitting line shouldn't hard adapt fit circle.

these slides give introduction ransac algorithm (starting page 42). show examples fitting circle.


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