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Emotional State Recognition with Micro-expressions and Pulse Rate Variability

Abstract : Machine learning has known a tremendous growth within the last years, and lately, thanks to that, some computer vision algorithms started to access what is difficult or even impossible to perceive by the human eye. It is then natural that scientists began looking for ways to probe humans’ emotions and their psyche with this technology. In this paper, we study the feasibility of recognizing and classifying the abstract concept of emotional states from videos of people facing a regular RGB camera. We do so by using the barely perceptible micro facial expressions humans cannot control, as well as the spontaneous variations of the pulse rate that we estimated using remote photoplethysmography. We compare these two modalities and our experimental results show that it is possible to classify emotional states from these implicit information gathered from regular cameras with encouraging performances.
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https://hal-univ-bourgogne.archives-ouvertes.fr/hal-02354497
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Submitted on : Thursday, November 7, 2019 - 5:31:57 PM
Last modification on : Thursday, August 4, 2022 - 5:07:32 PM

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Reda Belaiche, Rita Meziati Sabour, Cyrille Migniot, Yannick Benezeth, Dominique Ginhac, et al.. Emotional State Recognition with Micro-expressions and Pulse Rate Variability. International Conference on Image Analysis and Processing, Sep 2019, Trento, Italy. pp.26-35, ⟨10.1007/978-3-030-30642-7_3⟩. ⟨hal-02354497⟩

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