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  Integration of kinematic components in the perception of emotional facial expressions

Curio, C., Chiovetto, E., & Giese, M. (2013). Integration of kinematic components in the perception of emotional facial expressions. Perception, 42(ECVP Abstract Supplement), 242-243.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-54E3-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-18FE-5
Genre: Meeting Abstract

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http://journals.sagepub.com/toc/pec/42/1_suppl (Publisher version)
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 Creators:
Curio, C1, 2, 3, Author              
Chiovetto, E, Author
Giese, MA, Author              
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              
3Project group: Cognitive Engineering, Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_2528702              

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 Abstract: The idea that complex facial or body movements are composed of simpler components (usually referred to as ‘movement primitives’ or ‘action units’) is common in motor control (Chiovetto et al. 2010) as well as in the study of facial expressions (Ekman & Friesen, 1978). However, such components have rarely been extracted from real facial movement data. METHODS: We estimated spatio-temporal components that capture the major part of the variance of dynamic facial expressions, using a motion retargeting model for 3D facial animation (Curio et al, 2010) and applying dimension reduction methods (NMF and anechoic demixing). The estimated components were used to generate artificial stimuli, assessing the minimal required number of components in a perceptual Turing test, and their contributions to expression classification and expressiveness ratings. RESULTS: For an anechoic mixing model two components were sufficient for perfect reconstruction of the original expression. Often one component is sufficient for classification, while ratings tend to depend gradually on two, or more components.

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 Dates: 2013-08
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: DOI: 10.1177/03010066130420S101
 Degree: -

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Title: 36th European Conference on Visual Perception (ECVP 2013)
Place of Event: Bremen, Germany
Start-/End Date: 2013-08-25 - 2013-08-29

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Title: Perception
Source Genre: Journal
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Publ. Info: London : Pion Ltd.
Pages: - Volume / Issue: 42 (ECVP Abstract Supplement) Sequence Number: - Start / End Page: 242 - 243 Identifier: ISSN: 0301-0066
CoNE: https://pure.mpg.de/cone/journals/resource/954925509369