Action coding facial system

Temporal AU profiles of another subject in disgust emotion. As a service to our customers we are providing this early version of the manuscript. Short bars indicate low or no likelihood and longer bars indicate high likelihood. Previous facial expression recognition systems typically used either geometric or texture features, not both. A code combination of AU6 and AU12 together represent a sincere and involuntary smile. Detecting facial regions in an unknown image has been studied intensively in computer vision, and successful methods are known Viola and Jones ; Lienhart and Maydt ; Yang et al.