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Although state-of-the-art classifiers for facial expression recognition (FER) can achieve a high level of accuracy, they lack interpretability, an important feature for end-users. Experts typically associate spatial action units (\aus) from…

Computer Vision and Pattern Recognition · Computer Science 2024-05-15 Soufiane Belharbi , Marco Pedersoli , Alessandro Lameiras Koerich , Simon Bacon , Eric Granger

People naturally understand emotions, thus permitting a machine to do the same could open new paths for human-computer interaction. Facial expressions can be very useful for emotion recognition techniques, as these are the biggest…

Computer Vision and Pattern Recognition · Computer Science 2023-11-21 Pietro B. S. Masur , Willams Costa , Lucas S. Figueredo , Veronica Teichrieb

Facial action units (FAUs) are critical for fine-grained facial expression analysis. Although FAU detection has been actively studied using ideally high quality images, it was not thoroughly studied under heavily occluded conditions. In…

Computer Vision and Pattern Recognition · Computer Science 2022-12-09 Minyang Jiang , Yongwei Wang , Martin J. McKeown , Z. Jane Wang

Automatic facial action unit (AU) recognition is a challenging task due to the scarcity of manual annotations. To alleviate this problem, a large amount of efforts has been dedicated to exploiting various methods which leverage numerous…

Computer Vision and Pattern Recognition · Computer Science 2021-08-02 Jingwei Yan , Jingjing Wang , Qiang Li , Chunmao Wang , Shiliang Pu

Facial Action Coding System is an important approach of facial expression analysis.This paper describes our submission to the third Affective Behavior Analysis (ABAW) 2022 competition. We proposed a transfomer based model to detect facial…

Computer Vision and Pattern Recognition · Computer Science 2022-03-29 Lingfeng Wang , Shisen Wang , Jin Qi

This paper presents our Facial Action Units (AUs) detection submission to the fifth Affective Behavior Analysis in-the-wild Competition (ABAW). Our approach consists of three main modules: (i) a pre-trained facial representation encoder…

Computer Vision and Pattern Recognition · Computer Science 2023-06-06 Zihan Wang , Siyang Song , Cheng Luo , Yuzhi Zhou , Shiling Wu , Weicheng Xie , Linlin Shen

Human facial action units (AUs) are mutually related in a hierarchical manner, as not only they are associated with each other in both spatial and temporal domains but also AUs located in the same/close facial regions show stronger…

Computer Vision and Pattern Recognition · Computer Science 2024-04-10 Zihan Wang , Siyang Song , Cheng Luo , Songhe Deng , Weicheng Xie , Linlin Shen

The detection of micro-expression Action Units (AUs) is a formidable challenge in affective computing, pivotal for decoding subtle, involuntary human emotions. While Large Language Models (LLMs) demonstrate profound reasoning abilities,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-30 Zhishu Liu , Kaishen Yuan , Bo Zhao , Yong Xu , Zitong Yu

Recently how to introduce large amounts of unlabeled facial images in the wild into supervised Facial Action Unit (AU) detection frameworks has become a challenging problem. In this paper, we propose a new AU detection framework where…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Ziqiao Shang , Li Yu

Most state-of-the-art approaches for Facial Action Unit (AU) detection rely upon evaluating facial expressions from static frames, encoding a snapshot of heightened facial activity. In real-world interactions, however, facial expressions…

Computer Vision and Pattern Recognition · Computer Science 2021-03-05 Nikhil Churamani , Sinan Kalkan , Hatice Gunes

Facial Action Unit (AU) detection is a crucial task for emotion analysis from facial movements. The apparent differences of different subjects sometimes mislead changes brought by AUs, resulting in inaccurate results. However, most of the…

Computer Vision and Pattern Recognition · Computer Science 2023-03-07 Jiyuan Cao , Zhilei Liu , Yong Zhang

This paper describes an approach to the facial action unit (AU) detection. In this work, we present our submission to the Field Affective Behavior Analysis (ABAW) 2021 competition. The proposed method uses the pre-trained JAA model as the…

Computer Vision and Pattern Recognition · Computer Science 2021-07-12 Chenggong Zhang , Juan Song , Qingyang Zhang , Weilong Dong , Ruomeng Ding , Zhilei Liu

Facial action unit (AU) detection is a challenging task due to the scarcity of manual annotations. Recent works on AU detection with self-supervised learning have emerged to address this problem, aiming to learn meaningful AU…

Computer Vision and Pattern Recognition · Computer Science 2023-03-13 Juan Song , Zhilei Liu

Studies have proven that domain bias and label bias exist in different Facial Expression Recognition (FER) datasets, making it hard to improve the performance of a specific dataset by adding other datasets. For the FER bias issue, recent…

Computer Vision and Pattern Recognition · Computer Science 2022-11-15 Shuyi Mao , Xinpeng Li , Qingyang Wu , Xiaojiang Peng

Facial Emotion Analysis (FEA) plays a crucial role in visual affective computing, aiming to infer a person's emotional state based on facial data. Scientifically, facial expressions (FEs) result from the coordinated movement of facial…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Zhuozhao Hu , Kaishen Yuan , Xin Liu , Zitong Yu , Yuan Zong , Jingang Shi , Huanjing Yue , Jingyu Yang

Facial action unit (AU) detection, aiming to classify AU present in the facial image, has long suffered from insufficient AU annotations. In this paper, we aim to mitigate this data scarcity issue by learning AU representations from a large…

Computer Vision and Pattern Recognition · Computer Science 2024-03-07 Yong Li , Shiguang Shan

Anatomical understanding through deep learning is critical for automatic report generation, intra-operative navigation, and organ localization in medical imaging; however, its progress is constrained by the scarcity of expert-labeled data.…

Computer Vision and Pattern Recognition · Computer Science 2025-09-29 Yiwei Li , Yikang Liu , Jiaqi Guo , Lin Zhao , Zheyuan Zhang , Xiao Chen , Boris Mailhe , Ankush Mukherjee , Terrence Chen , Shanhui Sun

Current works formulate facial action unit (AU) recognition as a supervised learning problem, requiring fully AU-labeled facial images during training. It is challenging if not impossible to provide AU annotations for large numbers of…

Computer Vision and Pattern Recognition · Computer Science 2021-06-07 Shangfei Wang , Yanan Chang , Guozhu Peng , Bowen Pan

Facial pain expression is an important modality for assessing pain, especially when the patient's verbal ability to communicate is impaired. The facial muscle-based action units (AUs), which are defined by the Facial Action Coding System…

Computer Vision and Pattern Recognition · Computer Science 2018-11-21 Zhanli Chen , Rashid Ansari , Diana Wilkie

Dynamic Facial Expression Recognition(DFER) is a rapidly evolving field of research that focuses on the recognition of time-series facial expressions. While previous research on DFER has concentrated on feature learning from a deep learning…

Computer Vision and Pattern Recognition · Computer Science 2025-07-11 Feng Liu , Lingna Gu , Chen Shi , Xiaolan Fu