Fig. 2
A Definition of distance factor metric (DFM) and relative length (RL). L1 is the actual length of the curve; L2 is the length of the straight-line between the start and end points of the curve. B Definition of sum of angular measures (SOAM). α indicates measured angles, and n is its count. L1 is as mentioned above. C Definition of inflection point counting metric (ICM). n is the number of the curve’s inflection points. L1 and L2 are as mentioned above. D Definition of triangular index (TI). n is the number of the triangle obtained by partitioning, a and b are triangle sides, and c is its base. (Created with BioRender.com.)