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. 2022 Dec 27;17(12):e0279339. doi: 10.1371/journal.pone.0279339

Fig 1. The location of landmark for facial orientation.

Fig 1

To set the facial observation angle, the face image was rotated in the yaw and pitch directions with an origin at landmark A, which was set at the midpoint of the pupils. The photographs show an averaged face of models in their 20s as an example.