PT Unknown
AU Hamdi Dibeklioglu
   Theo Gevers
   Albert Ali Salah
TI Are You Really Smiling at Me? Spontaneous versus Posed Enjoyment Smiles
BT 12th European Conference on Computer Vision
PY 2012
BP 525
EP 538
VL 7574
IS III
DI 10.1007/978-3-642-33712-3_38
AB Smiling is an indispensable element of nonverbal social interaction. Besides, automatic distinction between spontaneous and posed expressions is important for visual analysis of social signals. Therefore, in this paper, we propose a method to distinguish between spontaneous and posed enjoyment smiles by using the dynamics of eyelid, cheek, and lip corner movements. The discriminative power of these movements, and the effect of different fusion levels are investigated on multiple databases. Our results improve the state-of-the-art. We also introduce the largest spontaneous/posed enjoyment smile database collected to date, and report new empirical and conceptual findings on smile dynamics. The collected database consists of 1240 samples of 400 subjects. Moreover, it has the unique property of having an age range from 8 to 76 years. Large scale experiments on the new database indicate that eyelid dynamics are highly relevant for smile classification, and there are age-related differences in smile dynamics.
ER