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Protocol for Data Collection and Analysis Applied to Automated Facial Expression Analysis Technology and Temporal Analysis for Sensory Evaluation
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FACSHuman, a software program for creating experimental material by modeling 3D facial expressions.

Michaël Gilbert1, Samuel Demarchi2, Isabel Urdapilleta1

  • 1Department of Psychology, Université Paris 8, 2, rue de la Liberté, 93526, Saint-Denis CEDEX, France.

Behavior Research Methods
|April 7, 2021
PubMed
Summary

FACSHuman software generates realistic facial expressions for research. Evaluations show high accuracy in emotion categorization and accurate coding of facial action units, validating its use in nonverbal communication studies.

Keywords:
AvatarsEmotionFACSFacial expressionsNonverbal communication

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Area of Science:

  • Psychology
  • Computer Science
  • Human-Computer Interaction

Background:

  • The Facial Action Coding System (FACS) is a standard for describing facial movements.
  • Creating accurate digital facial expressions for research is challenging.

Purpose of the Study:

  • To introduce FACSHuman, a novel software for generating facial expression stimuli.
  • To evaluate the accuracy and efficiency of FACSHuman-generated expressions.

Main Methods:

  • FACSHuman software was used to create facial expression stimuli based on FACS Action Units (AUs).
  • Four experiments were conducted: emotion categorization, AU matching, and AU/AU combination coding by FACS experts.

Main Results:

  • Generated emotional expressions were categorized with 85% accuracy.
  • High accuracy was observed in matching common AUs (82%) and coding individual AUs (64-85%) and AU combinations (68-82%).

Conclusions:

  • FACSHuman is a viable tool for creating experimental materials for nonverbal communication and emotion research.
  • The software effectively simulates FACS-based facial expressions.