Journal
SENSORS
Volume 18, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/s18092826
Keywords
emotion recognition; EOG; eye movement video; healthcare; adolescence
Funding
- Anhui Provincial Natural Science Research Project of Colleges and Universities Fund [KJ2018A0008]
- Open Fund for Discipline Construction under Grant Institute of Physical Science and Information Technology in Anhui University
- National Natural Science Fund of China [61401002]
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Facing the adolescents and detecting their emotional state is vital for promoting rehabilitation therapy within an E-Healthcare system. Focusing on a novel approach for a sensor-based E-Healthcare system, we propose an eye movement information-based emotion perception algorithm by collecting and analyzing electrooculography (EOG) signals and eye movement video synchronously. Specifically, we extract the time-frequency eye movement features by firstly applying the short-time Fourier transform (STFT) to raw multi-channel EOG signals. Subsequently, in order to integrate time domain eye movement features (i.e., saccade duration, fixation duration, and pupil diameter), we investigate two feature fusion strategies: feature level fusion (FLF) and decision level fusion (DLF). Recognition experiments have been also performed according to three emotional states: positive, neutral, and negative. The average accuracies are 88.64% (the FLF method) and 88.35% (the DLF with maximal rule method), respectively. Experimental results reveal that eye movement information can effectively reflect the emotional state of the adolescences, which provides a promising tool to improve the performance of the E-Healthcare system.
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