Cited by 34Emotion and Mood RecognitionFace recognition and analysisFace and Expression Recognition

MMA-DFER: MultiModal Adaptation of unimodal models for Dynamic Facial Expression Recognition in-the-wild

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Chumachenko, Kateryna, Iosifidis, Alexandros, Gabbouj, Moncef·2024·2024 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)

Abstract

Dynamic Facial Expression Recognition (DFER) has received significant interest in the recent years dictated by its pivotal role in enabling empathic and human-compatible technologies. Achieving robustness towards in-the-wild data in DFER is particularly important for real-world applications. One of the directions aimed at improving such models is multimodal emotion recognition based on audio and video data. Multimodal learning in DFER increases the model capabilities by leveraging richer, complementary data representations. Within the field of multimodal DFER, recent methods have focused on exploiting advances of self-supervised learning (SSL) for pre-training of strong multi-modal encoders [40]. Another line of research has focused on adapting pre-trained static models for DFER [8]. In this work, we propose a different perspective on the problem and investigate the advancement of multimodal DFER performance by adapting SSL-pre-trained disjoint unimodal encoders. We identify main challenges associated with this task, namely, intra-modality adaptation, cross-modal alignment, and temporal adaptation, and propose solutions to each of them. As a result, we demonstrate improvement over current state-of-the-art on two popular DFER benchmarks, namely DFEW [19] and MFAW [29].

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  • In MMA-DFER, temporal relationships between frames and integration of features with the image during Transformer processing are inadequately considered.

    “As demonstrated in Figure 3, within the MMA-DFER sequence, there is inadequate consideration given to the temporal relationships between frames and the integration of features with the image during the Transformer's processing.”

    From Multimodal Dynamic Face Emotion Verification Model based on Priori Prompt Words for Dynamic Facial Expression Recognition (2025) · cites this paper as [19]

    Section 3.4 (Temporal fusion) says MMA-DFER addresses between-frame dependencies with a Multimodal Temporal Transformer that processes a joint audio–video sequence. It also says fusion modules implicitly embed temporal information in image features at intermediate stages. Section 4.4 reports that the proposed temporal Transformer performed best among the tested temporal-adaptation approaches, rather than describing temporal processing as inadequate. (LLM, conf=0.85)

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  • The multimodal temporal module in MMA-DFER primarily focuses on classification of features derived from already fused video and audio data, after substantial feature extraction.

    “However, the primary focus of this module is the classification of features derived from already fused video and audio data, where a substantial extraction of features has been conducted.”

    From Multimodal Dynamic Face Emotion Verification Model based on Priori Prompt Words for Dynamic Facial Expression Recognition (2025) · cites this paper as [19]

    Section 3.4 places the Multimodal Temporal Transformer after the video and audio representations are fused, so the claim is right about its position after feature extraction. But the section describes its purpose as modeling between-frame temporal dependencies; its output is then passed to a separate classifier. Calling classification the module’s primary focus overstates what the paper says. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • MMA-DFER uses an audiovisual self-supervised model with a Transformer structure, a 3% parameter reduction, and feature-level fine-tuning, achieving strong learning results and sentiment classification using categorical tokens.

    “MMA-DFER [19] proposed a framework based on an audiovisual self-supervised model using a Transformer structure with a 3% parameter reduction and fine-tuning at the feature level. This approach achieved strong learning results and resulted in sentiment classification using categorical tokens.”

    From Multimodal Dynamic Face Emotion Verification Model based on Priori Prompt Words for Dynamic Facial Expression Recognition (2025) · cites this paper as [19]

    Sections 3 and 3.4 describe independently self-supervised-pretrained audio and visual encoders, feature adaptation, a Multimodal Temporal Transformer, and classification using a [CLS] token; Section 4.3 reports strong benchmark results. But the paper does not describe a 3% parameter reduction: Section 4.2 reports 7.5 million tunable parameters, versus 9 million for S2D. It uses a classification token, not “categorical tokens,” and does not start from a jointly pretrained audiovisual model. (LLM, conf=0.88)

    Experimental — accuracy not yet measured

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Research works printed but not linked: 12

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  2. Alexey Dosovitskiy, Lucas Beyer, Alexander Kolesnikov, Dirk Weissenborn, Xiaohua Zhai, Thomas Unterthiner, Mostafa Dehghani, Matthias Minderer, Georg Heigold, Syl- vain Gelly, et al. An image is worth 16x16 words: Trans- formers for image recognition at scale. arXiv preprint arXiv:2010.11929, 2020. 3, 7 · arXiv
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  5. Xingxun Jiang, Yuan Zong, Wenming Zheng, Chuangao Tang, Wanchuang Xia, Cheng Lu, and Jiateng Liu. Dfew: A large-scale database for recognizing dynamic facial expres- sions in the wild. In Proceedings of the 28th ACM Interna- tional Conference on Multimedia, pages 2881-2889, 2020. 1, 2, 5
  6. Diederik P Kingma and Max Welling. Auto-encoding varia- tional bayes. arXiv preprint arXiv:1312.6114, 2013. 4 · arXiv
  7. Hanting Li, Mingzhe Sui, Zhaoqing Zhu, et al. Nr-dfernet: Noise-robust network for dynamic facial expression recogni- tion. arXiv preprint arXiv:2206.04975, 2022. 6 · arXiv
  8. Hanting Li, Hongjing Niu, Zhaoqing Zhu, and Feng Zhao. Cliper: A unified vision-language framework for in-the-wild facial expression recognition. arXiv preprint arXiv:2303.00193, 2023. 6 · arXiv
  9. Xiao Liu, Kaixuan Ji, Yicheng Fu, Weng Lam Tam, Zhengx- iao Du, Zhilin Yang, and Jie Tang. P-tuning v2: Prompt tuning can be comparable to fine-tuning universally across scales and tasks. arXiv preprint arXiv:2110.07602, 2021. 3 · arXiv
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  12. Zengqun Zhao and Ioannis Patras. Prompting visual- language models for dynamic facial expression recognition. arXiv preprint arXiv:2308.13382, 2023. 2, 3 · arXiv

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Authors
Chumachenko, K., Iosifidis, A., & Gabbouj, M.
Affiliations
  • Tampere University (FI)
  • Aarhus University (DK)
Venue
2024 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)
Publisher
IEEE
Published
2024-06-17
Pages
4673-4682
OpenAlex
W4402916290
Cited by
34
References
46
Citations by year
2026: 14 · 2025: 17 · 2024: 3
FWCI
21.25
Type
conference paper
Language
en
Open access
Locations
  • IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW) (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • Tampere University Institutional Repository (Tampere University) (submittedVersion)
  • arXiv (Cornell University)
Funders
  • Business Finland
  • Horizon Europe
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Emotion and Mood Recognition
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Face recognition and analysis
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Face and Expression Recognition
Keywords
dynamic facial expression recognition, multimodal emotion recognition, in-the-wild data, self-supervised pre-training, cross-modal alignment, temporal adaptation, audio-video fusion

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