Feature Representation Learning with Adaptive Displacement Generation and Transformer Fusion for Micro-Expression Recognition

• URL: http://arxiv.org/abs/2304.04420v1
• Date: Mon, 10 Apr 2023 07:03:36 GMT
• Title: Feature Representation Learning with Adaptive Displacement Generation and Transformer Fusion for Micro-Expression Recognition
• Authors: Zhijun Zhai, Jianhui Zhao, Chengjiang Long, Wenju Xu, Shuangjiang He, Huijuan Zhao
• Abstract summary: Micro-expressions are spontaneous, rapid and subtle facial movements that can neither be forged nor suppressed. We propose a novel framework Feature Representation Learning with adaptive Displacement Generation and Transformer fusion (FRL-DGT) Experiments with solid leave-one-subject-out (LOSO) evaluation results have demonstrated the superiority of our proposed FRL-DGT to state-of-the-art methods.
• Score: 18.6490971645882
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Micro-expressions are spontaneous, rapid and subtle facial movements that can neither be forged nor suppressed. They are very important nonverbal communication clues, but are transient and of low intensity thus difficult to recognize. Recently deep learning based methods have been developed for micro-expression (ME) recognition using feature extraction and fusion techniques, however, targeted feature learning and efficient feature fusion still lack further study according to the ME characteristics. To address these issues, we propose a novel framework Feature Representation Learning with adaptive Displacement Generation and Transformer fusion (FRL-DGT), in which a convolutional Displacement Generation Module (DGM) with self-supervised learning is used to extract dynamic features from onset/apex frames targeted to the subsequent ME recognition task, and a well-designed Transformer Fusion mechanism composed of three Transformer-based fusion modules (local, global fusions based on AU regions and full-face fusion) is applied to extract the multi-level informative features after DGM for the final ME prediction. The extensive experiments with solid leave-one-subject-out (LOSO) evaluation results have demonstrated the superiority of our proposed FRL-DGT to state-of-the-art methods.

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