Fig. 14

a The curvature sequence obtained after approximating the entire contour of an “ε” realization from “SAGAN”, shown in blue. b Optimal matching between two curvature sequences of the outer contours of two “θ” realizations belonging to \({\mathrm{RB}}_{\rho ,\mathrm{M}}^{\rho ,i}\), extracted from “FYSAP”: the prototype-fixed contour curvature is shown in red, the initial position of the curvature of the transformed “θ” realization is depicted in blue, while its translated version, so as it optimally fits the curve of the prototype curvature, is shown in green