AFNet-M: Adaptive Fusion Network with Masks for 2D+3D Facial Expression Recognition

• URL: http://arxiv.org/abs/2205.11785v1
• Date: Tue, 24 May 2022 04:56:55 GMT
• Title: AFNet-M: Adaptive Fusion Network with Masks for 2D+3D Facial Expression Recognition
• Authors: Mingzhe Sui, Hanting Li, Zhaoqing Zhu, and Feng Zhao
• Abstract summary: 2D+3D facial expression recognition (FER) can effectively cope with illumination changes and pose variations. Most deep learning-based approaches employ the simple fusion strategy. We propose the adaptive fusion network with masks (AFNet-M) for 2D+3D FER.
• Score: 1.8604727699812171
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 2D+3D facial expression recognition (FER) can effectively cope with illumination changes and pose variations by simultaneously merging 2D texture and more robust 3D depth information. Most deep learning-based approaches employ the simple fusion strategy that concatenates the multimodal features directly after fully-connected layers, without considering the different degrees of significance for each modality. Meanwhile, how to focus on both 2D and 3D local features in salient regions is still a great challenge. In this letter, we propose the adaptive fusion network with masks (AFNet-M) for 2D+3D FER. To enhance 2D and 3D local features, we take the masks annotating salient regions of the face as prior knowledge and design the mask attention module (MA) which can automatically learn two modulation vectors to adjust the feature maps. Moreover, we introduce a novel fusion strategy that can perform adaptive fusion at convolutional layers through the designed importance weights computing module (IWC). Experimental results demonstrate that our AFNet-M achieves the state-of-the-art performance on BU-3DFE and Bosphorus datasets and requires fewer parameters in comparison with other models.

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