abstract:Facial Action Coding System (FACS) is a system to taxonomize human facial movements by their appearance on the face, based on a system originally developed by a Swedish anatomist named Carl-Herman Hjortsjö. It was later adopted by Paul Ekman and Wallace V.
First, the FacialActionCodingSystem, the first exhaustive analysis of all the expressions the face is capable of through detailed examination of all the possible ways that the muscles of the face can move and create expression.