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Sensing Technologies Applied in Human Emotion and Facial Expression Recognition

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Physical Sensors".

Deadline for manuscript submissions: 25 November 2025 | Viewed by 621

Special Issue Editors


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Guest Editor
College of Electronic and Information Engineering, Southwest University, Chongqing 400715, China
Interests: signal processing & image processing; affective computing; biomedical engineering

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Guest Editor
Electronic and Electrical Engineering, Brunel University London, Uxbridge UB8 3PH, UK
Interests: image processing; artificial intelligence; signal processing; affective computing
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Special Issue Information

Dear Colleagues,

In recent years, we have witnessed significant advancements in sensing technologies for human emotions, which primarily rely on analyzing facial expressions, voice, body language, and physiological signals to accurately recognize and understand human emotional states. These technologies will provide more intelligent and personalized solutions for fields such as human–computer interaction, healthcare, education, customer service, etc.

This Special Issue aims to collate original research and review articles focusing on recent progress, technologies, approaches, applications, and new obstacles in the field of human emotion and facial expression recognition.

Dr. Tong Chen
Prof. Dr. Hongying Meng
Guest Editors

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Keywords

  • emotion recognition and understanding
  • intent recognition
  • facial expression recognition
  • micro-expression recognition
  • masked facial expression recognition
  • stress recognition
  • physiological signal
  • multi-modal signals
  • wearable sensors
  • imaging sensors
  • non-contact sensing for physiological signal measurement
  • non-contact sensing for emotion recognition

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Published Papers (1 paper)

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Research

22 pages, 23958 KiB  
Article
A Lightweight Dual-Stream Network with an Adaptive Strategy for Efficient Micro-Expression Recognition
by Xinyu Liu, Ju Zhou, Feng Chen, Shigang Li, Hanpu Wang, Yingjuan Jia and Yuhao Shan
Sensors 2025, 25(9), 2866; https://doi.org/10.3390/s25092866 - 1 May 2025
Viewed by 207
Abstract
Micro-expressions (MEs), characterized by their brief duration and subtle facial muscle movements, pose significant challenges for accurate recognition. These ultra-fast signals, typically captured by high-speed vision sensors, require specialized computational methods to extract spatio-temporal features effectively. In this study, we propose a lightweight [...] Read more.
Micro-expressions (MEs), characterized by their brief duration and subtle facial muscle movements, pose significant challenges for accurate recognition. These ultra-fast signals, typically captured by high-speed vision sensors, require specialized computational methods to extract spatio-temporal features effectively. In this study, we propose a lightweight dual-stream network with an adaptive strategy for efficient ME recognition. Firstly, a motion magnification network based on transfer learning is employed to magnify the motion states of facial muscles in MEs. This process can generate additional samples, thereby expanding the training set. To effectively capture the dynamic changes of facial muscles, dense optical flow is extracted from the onset frame and the magnified apex frame, thereby obtaining magnified dense optical flow (MDOF). Subsequently, we design a dual-stream spatio-temporal network (DSTNet), using the magnified apex frame and MDOF as inputs for the spatial and temporal streams, respectively. An adaptive strategy that dynamically adjusts the magnification factor based on the top-1 confidence is introduced to enhance the robustness of DSTNet. Experimental results show that our proposed method outperforms existing methods in terms of F1-score on the SMIC, CASME II, SAMM, and composite dataset, as well as in cross-dataset tasks. Adaptive DSTNet significantly enhances the handling of sample imbalance while demonstrating robustness and featuring a lightweight design, indicating strong potential for future edge sensor deployment. Full article
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