Facial action coding system alternative

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Some context is:. A facial movement , called a facial action, can be one muscle contracting or several different muscles contracting together. FACS coders go through rigorous training to learn to identify individual facial action units when they are active, and they must meet certain standards of reliability before they are certified. According to Ekman and colleagues, particular combinations of facial action units are supposed to correspond to emotion-specific expressions, where each expression is created by contracting a specific set of facial muscles. The one-to-one correspondence between particular facial actions and facial expressions is weakened by findings that different combinations of action units can produce similar looking expressions. They encourage coders to engage in what scientists call "configural perception.
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A Comparative Study of Alternative FACS Coding Algorithms

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Classifying Facial Actions

Skip to search form Skip to main content. The database is from Frank and Ekman who video-recorded an interrogation in which subjects lied or told the truth about a mock crime. View PDF. Save to Library. Create Alert. Share This Paper.
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Using the Facial Action Coding System (FACS): a point of view from a FACS Coder

Every detail on how to use the FACS will be exhaustively explained itself in the Manual, which is and will always represent for a FACS Coder an indispensable guide, to be consulted every times codify facial expressions is necessary. After that, we could focus our attention in codify only the rapid signals emotional or communicative facial expressions. A video of an experimental subject is delivered to a FACS Coder; the subjects face in the foreground has been videotaped.
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Friesen, and published in Hager published a significant update to FACS in Due to subjectivity and time consumption issues, FACS has been established as a computed automated system that detects faces in videos, extracts the geometrical features of the faces, and then produces temporal profiles of each facial movement. Using FACS [8] human coders can manually code nearly any anatomically possible facial expression, deconstructing it into the specific action units AU and their temporal segments that produced the expression.
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