Abstract
Facial expression recognition has become a hot issue in the field of artificial intelligence. So, we collect literature on facial expression recognition. First, methods based on machine learning are introduced in detail, which include image preprocessing, feature extraction, and image classification. Then, we review deep learning methods in detail: convolutional neural networks, deep belief networks, generative adversarial networks, and recurrent neural networks. Moreover, the advantages and limitations of different facial expression recognition methods are compared. In addition, 20 commonly used facial expression datasets are collected in this paper, and the types of expressions and the number of images contained in each dataset are summarized. Finally, the current problems and future development of facial expression recognition are concluded.
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Acknowledgments
The paper is supported by Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
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Xing Guo, Yudong Zhang, Siyuan Lu, and Zhihai Lu declare that they have no conflict of interest.
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Guo, X., Zhang, Y., Lu, S. et al. Facial expression recognition: a review. Multimed Tools Appl 83, 23689–23735 (2024). https://doi.org/10.1007/s11042-023-15982-x
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DOI: https://doi.org/10.1007/s11042-023-15982-x