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Effects of distortion of spatial and temporal resolution of video stimuli on emotion attributions

Effects of distortion of spatial and temporal resolution of video stimuli on emotion attributions Whether recognition of emotion from facial expression is affected by distortions of pictorial quality has rarely been tested, with the exception of the influence of picture size on emotion recognition. On the other hand, this question is important for (low-cost) tele-communication and tele-conferencing. Here an attempt is made to study whether emotion recognition from facial expression is impaired when video stimuli are distorted both with respect to spatial (pixel) resolution and with respect to temporal resolution (refreshment rate).N=56 stimuli, in which professional actors encoded 14 different emotions, were presented to groups of judges (N=10 in each condition) in six different distortion conditions. Furthermore, judges were confronted with a control condition, presenting the non-distorted stimuli. Channel of information (close-up of the face versus full body recording) was in addition manipulated. Results indicate (besides main effects for type of emotion encoded and for channel) that emotion recognition is impaired by reductions of both spatial resolution and temporal resolution, but that even very low spatial and temporal resolutions result in recognition rates which are still considerably above chance expectation. Results are discussed with respect to the importance of facial expression and body movement in communicating emotions, and with respect to applied aspects concerning tele-communication. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Nonverbal Behavior Springer Journals

Effects of distortion of spatial and temporal resolution of video stimuli on emotion attributions

Wallbott, Harald
Journal of Nonverbal Behavior , Volume 16 (1) – Dec 29, 2004
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References (31)

Publisher
Springer Journals
Copyright
Copyright
Subject
Psychology; Personality and Social Psychology; Sociology, general; Social Sciences, general
ISSN
0191-5886
eISSN
1573-3653
DOI
10.1007/BF00986876
Publisher site
See Article on Publisher Site

Abstract

Whether recognition of emotion from facial expression is affected by distortions of pictorial quality has rarely been tested, with the exception of the influence of picture size on emotion recognition. On the other hand, this question is important for (low-cost) tele-communication and tele-conferencing. Here an attempt is made to study whether emotion recognition from facial expression is impaired when video stimuli are distorted both with respect to spatial (pixel) resolution and with respect to temporal resolution (refreshment rate).N=56 stimuli, in which professional actors encoded 14 different emotions, were presented to groups of judges (N=10 in each condition) in six different distortion conditions. Furthermore, judges were confronted with a control condition, presenting the non-distorted stimuli. Channel of information (close-up of the face versus full body recording) was in addition manipulated. Results indicate (besides main effects for type of emotion encoded and for channel) that emotion recognition is impaired by reductions of both spatial resolution and temporal resolution, but that even very low spatial and temporal resolutions result in recognition rates which are still considerably above chance expectation. Results are discussed with respect to the importance of facial expression and body movement in communicating emotions, and with respect to applied aspects concerning tele-communication.

Journal

Journal of Nonverbal Behavior – Springer Journals

Published: Dec 29, 2004

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