3 point radius of curvature of a circle

Hi if i have a single pore, and i have calculated pore boundries already, and i have matrix of x and y cordinates of the pore.

How can i calcualte radius of curvature of 3 points of that pore. Thank you

Answer 1

[cr]

Just fit a circle through the xy coordinate data and you would get centre and radius. See

https://lucidar.me/en/mathematics/least-squares-fitting-of-circle/

https://in.mathworks.com/matlabcentral/fileexchange/57668-fit-circle-through-3-points

[SANA]

For every 3 points i want to calculate radii of curvature, not just one radius

[Matt J]

Why does that matter? Obviously you can repeat the process for every set of 3 points that are of interest.

[cr]

I agree with Matt. You can do permute and repeat the circle fitting process for all combinations.