Realistic Facial Expression of Virtual Human Based on Color, Sweat, and Tears Effects

Table 2

Action units used to represent four basic expressions [17].

AUs	FACS name	AUs	FACS name	AUs	FACS; name
6	Check raiser	23	Lip tightener	15	Lip corner depressor
1	Inner brow raiser	26	Jaw drop	5	Upper lid raiser
17	Raiser chin	20	Lip stretcher	9	Nose wrinkle
4	Brow lower	14	Dimpler	16	Lower lip depressor
10	Upper lip raiser	2	Outer brow raiser	12	Lid corner puller