Feature quantity number | Feature quantity symbol | Feature quantity description |
1 | F1 | Nose and ears width (nose up to the top of the ear) |
4 | F4 | Nose to the height of the forehead center |
5 | F5 | Nose to the eyes of the angle |
6 | F6 | Forehead center to the side of the distance |
7 | F7 | The distance on both sides of the forehead |