Figure 1
From: Shape Analysis of 3D Head Scan Data for U.S. Respirator Users
Location and identification of the 26 landmarks used for the PCA: Tragion (1, 19), Zygion (2, 17), gonion (3, 18), Frontotemporale (4, 15), Zygofrontale (5, 16), Infraorbitale (6, 14), Glabella (7), Sellion (8), Pronasale (9), Subnasale (10), Menton (11), Chelion (12, 13), Pupil (20, 21), Nasal root point (22, 23), Alare (24, 25), and Chin (26).