Facial Action Coding System (FACS)
What is the Facial Action Coding System (FACS)?
The Facial Action Coding System (FACS) is based on Action Units (AUs), roughly to be interpreted as the smallest visible units of muscular activity in the face, which produce changes in the facial appearance. The FACS is one of the most widely used and comprehensive coding systems for facial expression analysis. Roughly, there are three ways to score facial action units:
- Manually
- With use of facial expression recognition software, like FaceReader
- With use of coding software for observational data, like The Observer XT
Common Questions
Is FaceReader based on Facial Action Coding System (FACS)?
Yes! Unlike open source tools, FaceReader has been validated against FACS-trained coders.
Does FaceReader work with any face?
Yes! FaceReader has been validated for any face and it has no biases for or against any face.
How is FaceReader validated?
FaceReader’s classification was compared with manual annotation by two certified FACS coders. FaceReader is over 97% accurate!
