Title
Automatic Recognition of Facial Actions in Spontaneous Expressions
Abstract
Spontaneous facial expressions differ from posed expressions in both which muscles are moved, and in the dy- namics of the movement. Advances in the field of automatic facial expression measurement will require development and assessment on spontaneous behavior. Here we present preliminary results on a task of facial action detection in spontaneous facial expressions. We employ a user indepen- dent fully automatic system for real time recognition of facial actions from the Facial Action Coding System (FACS). The system automatically detects frontal faces in the video stream and coded each frame with respect to 20 Action units. The approach applies machine learning methods such as support vector machines and AdaBoost, to texture-based image representations. The output margin for the learned classifiers predicts action unit intensity. Frame-by-fram e intensity measurements will enable investigations into facial expression dynamics which were previously intractable by human coding.
Year
DOI
Venue
2006
10.4304/jmm.1.6.22-35
Journal of Multimedia
DocType
Volume
Issue
Journal
1
6
Citations 
PageRank 
References 
203
11.79
18
Authors
6
Search Limit
100203
Name
Order
Citations
PageRank
Marian Stewart Bartlett12026183.92
Gwen C. Littlewort226215.01
Mark G. Frank339420.35
Claudia Lainscsek1434722.77
Ian R. Fasel565640.60
Javier R. Movellan61853150.44