Sharpness of edges and corners of a particle, expressed by Wadell (1932) as the ratio of the average radius of curvature of corners of the particle to the radius of the maximum inscribed sphere.
For details: see pyRoundnessWadell.ipynb
points : 2d numpy array with x, y coordinate of the points
- R: Roundess after the model of Wadell, scalar
- radii: radii of the detected corners
- centers: centers of the detected corners