Cited by 425Emotion and Mood RecognitionFace recognition and analysisFace Recognition and Perception

Measuring facial expressions by computer image analysis

Bartlett, Marian Stewart, Hager, Joseph C., Ekman, Paul, Sejnowski, Terrence J.·1999·Psychophysiology

Abstract

Facial expressions provide an important behavioral measure for the study of emotion, cognitive processes, and social interaction. The Facial Action Coding System (Ekman & Friesen, 1978) is an objective method for quantifying facial movement in terms of component actions. We applied computer image analysis to the problem of automatically detecting facial actions in sequences of images. Three approaches were compared: holistic spatial analysis, explicit measurement of features such as wrinkles, and estimation of motion flow fields. The three methods were combined in a hybrid system that classified six upper facial actions with 91% accuracy. The hybrid system outperformed human nonexperts on this task and performed as well as highly trained experts. An automated system would make facial expression measurement more widely accessible as a research tool in behavioral science and investigations of the neural substrates of emotion.

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  • Ekman defined six basic emotion categories: happiness, sadness, surprise, fear, anger, and disgust.

    “Ekman defined six such categories, referred to as the basic emotions: happiness, sadness, surprise, fear, anger, and disgust [19].”
  • Ekman described each basic emotion in terms of a facial expression that uniquely characterizes that emotion.

    “He described each basic emotion in terms of a facial expression that uniquely characterizes that emotion.”

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2 of the 47 references couldn’t be matched to a known paper.

Research works printed but not linked: 11

  1. Beymer, D., Shashua, A., & Poggio, T. ~ 1993 ! . Example based image analysis and synthesis ~ AI Memo No. 1431 ! . Cambridge, MA: MIT Press.
  2. Cottrell, G. W., & Fleming, M. K. ~ 1990 ! . Face recognition using unsupervised feature extraction. Proceedings of the International Neural Network Conference ~ pp. 322-325 ! . Paris: Kluwer.
  3. Cottrell, G., & Metcalfe, J. ~ 1991 ! . EMPATH: Face, gender and emotion recognition using holons. In R. P. Lippman, J. Moody, & D. Touretzky ~ Eds. ! , Advances in neural information processing systems ~ Vol. 3, pp. 564-571 ! . San Mateo, CA: Morgan & Kaufman.
  4. Ekman, P. ~ Ed. ! . ~ 1982a ! . Emotion in the human face ~ 2nd ed. ! . New York: Cambridge University Press.
  5. Ekman, P., & Friesen, W. ~ 1978 ! . Facial Action Coding System: A technique for the measurement of facial movement. Palo Alto, CA: Consulting Psychologists Press.
  6. Ekman, P., Huang, T., Sejnowski, T., & Hager, J. ~ 1992 ! . Final Report to NSF of the Planning Workshop on Facial Expression Understanding @ on-line # . Available: http: 00 alt.xmission.com 0 nirc1 0 Research 0 research.html
  7. Hager, J., & Ekman, P. ~ 1995 ! . The essential behavioral science of the face and gesture that computer scientists need to know. In M. Bichsel ~ Ed. ! , Proceedings of the International Workshop on Automatic Face and Gesture Recognition ~ pp. 7-11 ! . Available: http: 00 alt.xmission.com 0 nirc1 0 Research 0 research.html
  8. Himer, W., Schneider, F., Kost, G., & Heimann, H. ~ 1991 ! . Computerbased analysis of facial action: A new approach. Journal of Psychophysiology , 5 , 189-195.
  9. Jain, R., Kasturi, R., & Schunk, B. G. ~ 1995 ! . Machine vision. New York: McGraw-Hill.
  10. Tukey, J. W. ~ 1958 ! . Bias and confidence in not-quite large samples. Annals of Mathematical Statistics , 29 , 614.
  11. Zajonc, R. B. ~ 1984 ! . The interaction of affect and cognition. In K. Scherer & P. Ekman ~ Eds. ! , Approaches to emotion ~ pp. 239-246 ! . Hillsdale, NJ: Erlbaum.

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Authors
Bartlett, M. S., Hager, J. C., Ekman, P., & Sejnowski, T. J.
Affiliations
  • Salk Institute for Biological Studies (US)
  • University of California, San Francisco (US)
Corresponding author
Bartlett, Marian Stewart
Venue
Psychophysiology
Publisher
Wiley
Published
1999-03
Volume
36
Issue
2
Pages
253-263
ISSN
  • 0048-5772 (ISSN-L)
  • 1469-8986
OpenAlex
W2007431552
Cited by
424
References
47
Citations by year
2026: 7 · 2025: 8 · 2024: 13 · 2023: 11 · 2022: 34 · 2021: 23 · 2020: 16 · 2019: 23 · 2018: 14 · 2017: 20 · 2016: 14 · 2015: 17 · 2014: 19 · 2013: 12 · 2012: 12
FWCI
19.99
Type
journal article
Language
en
Open access
closed
Locations
  • Psychophysiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Emotion and Mood Recognition
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Face recognition and analysis
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Face Recognition and Perception
Keywords
facial expressions, facial action units, facial action coding system, computer image analysis, wrinkles, hybrid classification system, emotion measurement
MeSH terms
Adult, Cues, Facial Expression, Female, Humans, Image Processing, Computer-Assisted, Male, Middle Aged, Databases as Topic

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