Abstract
Micro-expression (ME) refers to the facial expression that flashes instantly and can reveal the real feelings and emotions of people. Compared with ordinary facial expressions, ME is not easy to be identified due to its short duration and inconspicuous performance. This paper uses Swin Transformer as the main network and dual-branch as the main framework to extract the temporal and spatial features for micro-expression recognition (MER). The first branch uses optical flow operator to preprocess the ME sequences, and the resulting optical flow maps are fed into the first Swin Transformer to extract motion feature information. The second branch directly sends the apex frame in one ME clip to the second Swin Transformer to learn the spatial feature. Finally, the feature flows from the two branches are fused to implement the final MER task. Extensive experimental comparisons on three widely used public ME benchmarks show that the proposed method is superior to the-state-of-the-art MER approaches.
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Acknowledgements
This paper is supported by the Natural Science Foundation of Jiangxi Province of China (No. 20224ACB202011), the National Nature Science Foundation of China (No. 61861020) and the Jiangxi Province Graduate Innovation Special Fund Project (No. YC2022-s790).
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Xie, Z., Zhao, C. (2023). Micro-expression Recognition Based on Dual-Branch Swin Transformer Network. In: Huang, DS., Premaratne, P., Jin, B., Qu, B., Jo, KH., Hussain, A. (eds) Advanced Intelligent Computing Technology and Applications. ICIC 2023. Lecture Notes in Computer Science, vol 14087. Springer, Singapore. https://doi.org/10.1007/978-981-99-4742-3_45
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