Cited by 110Emotion and Mood RecognitionFace recognition and analysisFace and Expression Recognition

Recognizing Facial Expressions Using a Shallow Convolutional Neural Network

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Miao, Si, Xu, Haoyu, Han, Zhenqi, Zhu, Yongxin·2019·IEEE Access

Abstract

Generally, facial expressions could be classified into two categories: static facial expressions and micro-expressions. There are many promising applications of facial expression recognition, such as pain detection, lie detection, and babysitting. Traditional convolutional neural network (CNN)-based methods suffer from two critical problems when they are adopted to recognize micro-expressions. First, they are usually dependent on very deep architectures that overfit on small datasets. However, reliable expressions are relatively difficult to collect and relevant datasets are usually relatively small. Second, for micro-expressions, these methods usually neglect the temporal redundancy of micro-expressions which could be utilized to reduce the temporal complexity. In this paper, we propose a shallow CNN (SHCNN) architecture with only three layers to classify static expressions and micro-expressions simultaneously without big training datasets. To better explain the functionality of our SHCNN architecture, we improve the saliency maps by introducing a shrinkage factor after studying the vanishing gradient problem of existing saliency maps. Experiments are conducted on five open datasets: FER2013, FERPlus, CASME, CASME II, and SAMM. To the best of our knowledge, by comparing with other methods offering source code (or pseudo code), we believe that our method would be the best on FERPlus, CASME, and CASME II and competitive on FER2013 and SAMM.

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Authors
Miao, S., Xu, H., Han, Z., & Zhu, Y.
Affiliations
  • Chinese Academy of Sciences (CN)
  • Lenovo (China) (CN)
Venue
IEEE Access
Published
2019
Volume
7
Pages
78000-78011
ISSN
2169-3536 (ISSN-L)
OpenAlex
W2948217907
Cited by
110
References
52
Citations by year
2026: 3 · 2025: 6 · 2024: 19 · 2023: 28 · 2022: 25 · 2021: 20 · 2020: 8 · 2019: 1
FWCI
15.91
Type
journal article
Language
en
Open access
Locations
  • IEEE Access (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Science and Technology Commission of Shanghai Municipality (17511106400, 17511106402)
  • Aerospace System Department (30508020301)
  • National Natural Science Foundation of China (61201059)
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Emotion and Mood Recognition
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Face recognition and analysis
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Face and Expression Recognition
Keywords
facial expression recognition, micro-expressions, static facial expressions, shallow convolutional neural network, saliency maps, gradient vanishing, temporal redundancy, limited training data, overfitting

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