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Cited by 999

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Classifying facial actions

Open access
Donato, G., Bartlett, M.S., Hager, J.C., Ekman, P., Sejnowski, T.J.·1999·IEEE Transactions on Pattern Analysis and Machine Intelligence

Abstract

The Facial Action Coding System (FACS) [23] is an objective method for quantifying facial movement in terms of component actions. This system is widely used in behavioral investigations of emotion, cognitive processes, and social interaction. The coding is presently performed by highly trained human experts. This paper explores and compares techniques for automatically recognizing facial actions in sequences of images. These techniques include analysis of facial motion through estimation of optical flow; holistic spatial analysis, such as principal component analysis, independent component analysis, local feature analysis, and linear discriminant analysis; and methods based on the outputs of local filters, such as Gabor wavelet representations and local principal components. Performance of these systems is compared to naive and expert human subjects. Best performances were obtained using the Gabor wavelet representation and the independent component representation, both of which achieved 96 percent accuracy for classifying 12 facial actions of the upper and lower face. The results provide converging evidence for the importance of using local filters, high spatial frequencies, and statistical independence for classifying facial actions.

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Metadata

Authors
Donato, G., Bartlett, M. S., Hager, J. C., Ekman, P., & Sejnowski, T. J.
Venue
IEEE Transactions on Pattern Analysis and Machine Intelligence
Published
1999
Volume
21
Issue
10
Pages
974-989
ISSN
0162-8828 (ISSN-L)
OpenAlex
W2133180260
Cited by
999
References
5
FWCI
31.23
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Classifying facial actions. https://app.cochat.ai/papers/10.1109/34.799905
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Donato, G., Bartlett, M. S., Hager, J. C., Ekman, P., & Sejnowski, T. J. (1999). Classifying facial actions. IEEE Transactions on Pattern Analysis and Machine Intelligence. https://doi.org/10.1109/34.799905

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.