Study+of+the+Dynamic+Relation_.pdf (3.98 MB)
A study of the dynamic relation between physiological changes and spontaneous expressions
journal contribution
posted on 2017-10-05, 11:00 authored by Fenglei Yang, Sijung HuSijung Hu, Baomin Li, Vincent Dwyer, Harnani Hassan, Dongqing Wei, Ping ShiRecent progress in Affective Computing (AC) has enabled integration of physiological cues and spontaneous expressions to reveal a subject’s emotional state. Due to the lack of an effective technique for evaluating multimodal correlations, experience and intuition play a main role in present AC studies when fusing affective cues or modalities, resulting in unexpected outcomes. This study seeks to demonstrate a dynamic correlation between two such affective cues, physiological changes and spontaneous expressions, which were obtained by a combination of stereo vision based tracking and imaging photoplethysmography (iPPG), with a designed protocol involving 20 healthy subjects. The two cues obtained were sampled into a Statistical Association Space (SAS) to evaluate their dynamic correlation. It is found that the probability densities in the SAS increase as the peaks in two cues are approached. Also the complex form of the high probability density region in the SAS suggests a nonlinear correlation between two cues. Finally the cumulative distribution on the zero time-difference surface is found to be small (<0.047) demonstrating a lack of simultaneity. These results show that the two cues have a close interrelation, that is both asynchronous and nonlinear, in which a peak of one cue heralds a peak in the other.
Funding
NSFC (Grant No: 61371149).
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Scientific ReportsVolume
7Citation
YANG, F. ... et al, 2017. A study of the dynamic relation between physiological changes and spontaneous expressions. Scientific Reports, 7, 7081.Publisher
Nature Publishing Group © The Author(s)Version
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/Acceptance date
2017-07-04Publication date
2017Notes
This is an Open Access Article. It is published by Nature under the Creative Commons Attribution 4.0 International Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/ISSN
2045-2322Publisher version
Language
- en