Figure 3: The average length-amplitude curve of Cheekbone-Maxilla-Nasolabial contour.
From: A novel three-dimensional smile analysis based on dynamic evaluation of facial curve contour
The length from origins to specific landmarks was drawn on the horizontal axis whereas the motion amplitude was drawn on the vertical axis. The vertical bars represent the location of specific landmarks and the length of them represent the standard deviation of the motion amplitude at each landmarks. Green bars are located at the small amplitude points and blue ones are located at the large amplitude points. (a) Left side in smile state, (b) right side in smile state, (c) left side in laugh state and (d) right side in laugh state.
