I am working on analyzing the sheet metal contour (e.g. angle, outer radius, etc.) with the help of sensor. I wanted to Calculate of the mean outer radius of curve. radius of the curve could mean the curve on the edges of sheet metal object. I have just coordinates of random points and how can i know what points are straight line and what points are for the curve ? and how can make line or curve out of those points with the help of python?

I tried curve_fit function but it’s just making a curve with the applied random points, which is not correct.