I have a polygon of which I know:
- Area
- $x_{\max}$, $x_{\min}$
- $y_{\max}$, $y_{\min}$
and I would like to establish to what extend the polygon can be considered a circle.
From what I found, for calculating the circularity or the compactness I need to know the perimeter, which I don't have. So far, my idea is to calculate the roundness:
4 * Area / ( Pi * Major axis)^2
Is there anything else I could calculate?