Fig. 3
From: A novel method for 3D face symmetry reference plane based on weighted Procrustes analysis algorithm
Position error of the mirrored landmarks. a SRPs on original three-dimensional face, red colour plane signifies reference plane (SRP_Ref) and green colour represents WPA algorithm plane (SRP_WPA). b Blue landmarks signify original landmarks. c Reference mirror landmarks in red and WPA mirror landmarks in green, which were obtained from mirror original landmarks using SRP_Ref and SRP_WPA. d Global position error was defined as the average distance of the 32 pairs of reference and WPA mirrored landmarks