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Cross-database Micro Expression Recognition Based on Apex Frame Optical Flow and Multi-head Self-attention

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Parallel Architectures, Algorithms and Programming (PAAP 2020)

Part of the book series: Communications in Computer and Information Science ((CCIS,volume 1362))

Abstract

With the rise of deep learning in the field of compute vision, more and more researchers began to use CNNs for automatic recognition of micro-expressions, and achieved better performance than traditional methods. However, there is a overfitting problem with these methods. CNN focuses on local information and loses the global semantic information in the image. In this paper, we propose a novel micro-expression recognition method based on Apex frame and multi-head self-attention enhanced convolutional network. It consists of three parts: (1) The pre-processing part performs face detection, face alignment, cutting into uniform size and positioning Apex frames on micro-expressions; (2) Optical flow calculation of Apex frames, calculates TVL1 optical flow from Onset frames to Apex frames, and obtains horizontal and vertical optical flow component images; (3) A shallow network (AACNet) is designed to extract and classify the optical flow image components obtained in (2). The results has greatly improved over the benchmark method (LBP-TOP). The state-of-the-art results were achieved on the MEGC2019 database (UF1: 0.7572, UAR: 0.7564).

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Acknowledgements

This work was supported in part by the National Natural Science Foundation of China (No. U1603115),National key R&Dplan project (2017YF C0820702-3) and National Engineering Laboratory for Public Safety Risk Perception and Control by Big Data (XJ201810101).

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Correspondence to Wenzhong Yang .

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Wen, J., Yang, W., Wang, L., Wei, W., Tan, S., Wu, Y. (2021). Cross-database Micro Expression Recognition Based on Apex Frame Optical Flow and Multi-head Self-attention. In: Ning, L., Chau, V., Lau, F. (eds) Parallel Architectures, Algorithms and Programming. PAAP 2020. Communications in Computer and Information Science, vol 1362. Springer, Singapore. https://doi.org/10.1007/978-981-16-0010-4_12

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  • DOI: https://doi.org/10.1007/978-981-16-0010-4_12

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