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Movements of the robotic head, Muecas, and the action units associated with the face tracking algorithm.
| Head Movements | AUs | Muecas Movements |
|---|---|---|
| Yaw | AU51-AU52 | Head turn left-Head turn right |
| Pitch | AU53-AU54 | Head up-Head down |
| Roll | AU55-AU56 | Head tilt left-Head tilt right |
| Eye pan | AU61-AU62 | Eyes turn left-Eyes turn right |
| Eye tilt | AU63-AU64 | Eye up-Eye down |
