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Facial Action Coding 
System 
by 
Asil Adnan 
Freeda Johnsi 
Jwngshar Brahma 
Niraimathi 
Ram Kumar 
Umadevi
FACS 
• FACS is a research tool useful for 
measuring any facial expression a human 
being can make. It is an anatomically based 
system for comprehensively describing all 
observable facial movement. 
• Each observable component of facial 
movement is called an Action Unit or AU. 
• All facial expressions can be broken down 
into their constituent AU’s.
Action Unit concentrates on 
• Eyebrow 
• Lips 
• Cheeks 
• Forehead
EYEBROW 
• Major senders of signal 
• Highly visible communicator
Lowered 
• Lowered eyebrows are a sign of a dominant 
person 
• Indicate annoyance 
• Saying I am so displeased 
Raised 
• A person is surprised, their eyebrows are often 
raised 
• To expose eyes can also be a 
signal attraction
Middle-raised 
• This can indicate relief 
('Whew!'). 
• It can also indicate anxiety 
('Oh no!'). 
Middle-lowered 
• This often shows that the person is angry 
or frustrated. 
• It can also indicate intense concentration.
Middle together 
• It can indicate confusion or an 
attempt to perceive better 
('What's that?'). 
Up and down 
• When we see people we know, 
we often give a quick single 
up-down 'eyebrow flash' in recognition and 
greeting. 
• This is a common signal across all primates, 
including monkeys and gorillas.
Eyes 
Looking up 
• They are often thinking. 
• Looking upwards and to the left can indicate recalling a 
memory. 
• Looking up may also be a signal of boredom. 
Looking down 
• Looking down can thus be a signal 
of submission. It can also indicate that the person is feeling 
guilty. 
Looking sideways 
• Looking towards something that has 
taken their interest. 
• It can also be done to show irritation.
Lips 
• To distinguish genuine smiles from fake 
smiles, observe the wrinkles in the corner 
beside the persons eyes. 
• Also be aware that the eyebrows will slightly 
dip down as well.
Tight Lipped 
• By people who have secrets or 
withholding their true opinions and 
attitude towards some things. 
• The tight lipped smile is also used as a 
polite smile by someone who doesn’t 
like another person company and 
doesn’t know how to get rid of them.
Smirk 
• This is funny one. 
• Smirking is when someone showing two 
different emotions on their face. 
• If you put a piece of paper right through the 
middle covering a right or left side, you’ll 
see two different types of emotions on the 
same face that are expressed in the picture.
Shy smile 
• This smile was popularly used by Princesses 
Diana. 
• This will make the smile look more innocent, 
juvenile, playful and secretive. 
Compulsive smile 
• Suspiciously happy, because they either know 
something you don’t or they are being fake 
with everyone to gain something.
Teeth Display 
• In the hopes of appearing as though they 
are laughing and playful all the time. 
• This smile usually woke as it maker the 
smiling person appear happiness, 
friendlier and therefore more likeable 
and easier to approach.
Head Downwards Shrug: 
• This facial gesture is a 
clear display of a judgmental, 
aggressive or negative attitude 
in the person. 
Sideways Head 
• A sign of submissiveness.
Head Upwards 
• This head position in taken by people 
who fearlessness, arrogance or 
superiority. 
• A way of showing they don’t feel 
threatened by the person they are 
talking to.

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Facs

  • 1. Facial Action Coding System by Asil Adnan Freeda Johnsi Jwngshar Brahma Niraimathi Ram Kumar Umadevi
  • 2. FACS • FACS is a research tool useful for measuring any facial expression a human being can make. It is an anatomically based system for comprehensively describing all observable facial movement. • Each observable component of facial movement is called an Action Unit or AU. • All facial expressions can be broken down into their constituent AU’s.
  • 3. Action Unit concentrates on • Eyebrow • Lips • Cheeks • Forehead
  • 4. EYEBROW • Major senders of signal • Highly visible communicator
  • 5. Lowered • Lowered eyebrows are a sign of a dominant person • Indicate annoyance • Saying I am so displeased Raised • A person is surprised, their eyebrows are often raised • To expose eyes can also be a signal attraction
  • 6. Middle-raised • This can indicate relief ('Whew!'). • It can also indicate anxiety ('Oh no!'). Middle-lowered • This often shows that the person is angry or frustrated. • It can also indicate intense concentration.
  • 7. Middle together • It can indicate confusion or an attempt to perceive better ('What's that?'). Up and down • When we see people we know, we often give a quick single up-down 'eyebrow flash' in recognition and greeting. • This is a common signal across all primates, including monkeys and gorillas.
  • 8. Eyes Looking up • They are often thinking. • Looking upwards and to the left can indicate recalling a memory. • Looking up may also be a signal of boredom. Looking down • Looking down can thus be a signal of submission. It can also indicate that the person is feeling guilty. Looking sideways • Looking towards something that has taken their interest. • It can also be done to show irritation.
  • 9. Lips • To distinguish genuine smiles from fake smiles, observe the wrinkles in the corner beside the persons eyes. • Also be aware that the eyebrows will slightly dip down as well.
  • 10. Tight Lipped • By people who have secrets or withholding their true opinions and attitude towards some things. • The tight lipped smile is also used as a polite smile by someone who doesn’t like another person company and doesn’t know how to get rid of them.
  • 11. Smirk • This is funny one. • Smirking is when someone showing two different emotions on their face. • If you put a piece of paper right through the middle covering a right or left side, you’ll see two different types of emotions on the same face that are expressed in the picture.
  • 12. Shy smile • This smile was popularly used by Princesses Diana. • This will make the smile look more innocent, juvenile, playful and secretive. Compulsive smile • Suspiciously happy, because they either know something you don’t or they are being fake with everyone to gain something.
  • 13. Teeth Display • In the hopes of appearing as though they are laughing and playful all the time. • This smile usually woke as it maker the smiling person appear happiness, friendlier and therefore more likeable and easier to approach.
  • 14. Head Downwards Shrug: • This facial gesture is a clear display of a judgmental, aggressive or negative attitude in the person. Sideways Head • A sign of submissiveness.
  • 15. Head Upwards • This head position in taken by people who fearlessness, arrogance or superiority. • A way of showing they don’t feel threatened by the person they are talking to.