fit_ellipse
Find the best fit for an ellipse using a given set of points (a closed contour).
Author: Ohad Gal

Hi, I am using the script and it works fine for my data. I am trying to work the math a little bit and I am struggling at one point. why we assume that the f=-1? As far as I can see from the code, the value we assign to f affects the a, b, c, d, e which in turn affect the ellipse properties. Is that something mathematically trivial? I am looking forward for your answers
Cheers
Thanos