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This paper tackles the challenging problem of estimating the intensity of Facial Action Units with few labeled images. Contrary to previous works, our method does not require to manually select key frames, and produces state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2020-11-05 Enrique Sanchez , Adrian Bulat , Anestis Zaganidis , Georgios Tzimiropoulos

Facial action unit (AU) detection in the wild is a challenging problem, due to the unconstrained variability in facial appearances and the lack of accurate annotations. Most existing methods depend on either impractical labor-intensive…

Computer Vision and Pattern Recognition · Computer Science 2021-06-22 Zhiwen Shao , Jianfei Cai , Tat-Jen Cham , Xuequan Lu , Lizhuang Ma

This inherent relations among multiple face analysis tasks, such as landmark detection, head pose estimation, gender recognition and face attribute estimation are crucial to boost the performance of each task, but have not been thoroughly…

Computer Vision and Pattern Recognition · Computer Science 2019-11-20 Shangfei Wang , Shi Yin , Longfei Hao , Guang Liang

The automatic intensity estimation of facial action units (AUs) from a single image plays a vital role in facial analysis systems. One big challenge for data-driven AU intensity estimation is the lack of sufficient AU label data. Due to the…

Computer Vision and Pattern Recognition · Computer Science 2020-04-14 Xinhui Song , Tianyang Shi , Tianjia Shao , Yi Yuan , Zunlei Feng , Changjie Fan

Medical imaging AI systems such as disease classification and segmentation are increasingly inspired and transformed from computer vision based AI systems. Although an array of adversarial training and/or loss function based defense…

Machine Learning · Computer Science 2020-06-25 Xin Li , Deng Pan , Dongxiao Zhu

Facial action unit (AU) detection remains a challenging task, due to the subtlety, dynamics, and diversity of AUs. Recently, the prevailing techniques of self-attention and causal inference have been introduced to AU detection. However,…

Computer Vision and Pattern Recognition · Computer Science 2024-10-16 Zhiwen Shao , Hancheng Zhu , Yong Zhou , Xiang Xiang , Bing Liu , Rui Yao , Lizhuang Ma

Most existing AU detection works considering AU relationships are relying on probabilistic graphical models with manually extracted features. This paper proposes an end-to-end deep learning framework for facial AU detection with graph…

Computer Vision and Pattern Recognition · Computer Science 2020-01-03 Zhilei Liu , Jiahui Dong , Cuicui Zhang , Longbiao Wang , Jianwu Dang

Deep learning models are widely employed in safety-critical applications yet remain susceptible to adversarial attacks -- imperceptible perturbations that can significantly degrade model performance. Conventional defense mechanisms…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Eylon Mizrahi , Raz Lapid , Moshe Sipper

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 2024-10-04 Soufiane Belharbi , Marco Pedersoli , Alessandro Lameiras Koerich , Simon Bacon , Eric Granger

This paper describes an approach to the facial action units detections. The involved action units (AU) include AU1 (Inner Brow Raiser), AU2 (Outer Brow Raiser), AU4 (Brow Lowerer), AU6 (Cheek Raise), AU12 (Lip Corner Puller), AU15 (Lip…

Computer Vision and Pattern Recognition · Computer Science 2020-02-11 Xianpeng Ji , Yu Ding , Lincheng Li , Yu Chen , Changjie Fan

We propose an action recognition framework using Gen- erative Adversarial Networks. Our model involves train- ing a deep convolutional generative adversarial network (DCGAN) using a large video activity dataset without la- bel information.…

Computer Vision and Pattern Recognition · Computer Science 2018-01-23 Unaiza Ahsan , Chen Sun , Irfan Essa

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

Action Unit (AU) detection becomes essential for facial analysis. Many proposed approaches face challenging problems in dealing with the alignments of different face regions, in the effective fusion of temporal information, and in training…

Computer Vision and Pattern Recognition · Computer Science 2017-04-12 Wei Li , Farnaz Abitahi , Zhigang Zhu

In many real-world applications, face recognition models often degenerate when training data (referred to as source domain) are different from testing data (referred to as target domain). To alleviate this mismatch caused by some factors…

Computer Vision and Pattern Recognition · Computer Science 2023-05-24 Mei Wang , Weihong Deng

Facial Action Units (AUs) are essential for conveying psychological states and emotional expressions. While automatic AU detection systems leveraging deep learning have progressed, they often overfit to specific datasets and individual…

Computer Vision and Pattern Recognition · Computer Science 2025-03-13 Yong Li , Yi Ren , Xuesong Niu , Yi Ding , Xiu-Shen Wei , Cuntai Guan

Facial action unit (AU) recognition is a crucial task for facial expressions analysis and has attracted extensive attention in the field of artificial intelligence and computer vision. Existing works have either focused on designing or…

Computer Vision and Pattern Recognition · Computer Science 2019-04-23 Guanbin Li , Xin Zhu , Yirui Zeng , Qing Wang , Liang Lin

Despite the success of deep neural networks on facial action unit (AU) detection, better performance depends on a large number of training images with accurate AU annotations. However, labeling AU is time-consuming, expensive, and…

Computer Vision and Pattern Recognition · Computer Science 2021-05-17 Yong Li , Shiguang Shan

Face spoofing causes severe security threats in face recognition systems. Previous anti-spoofing works focused on supervised techniques, typically with either binary or auxiliary supervision. Most of them suffer from limited robustness and…

Computer Vision and Pattern Recognition · Computer Science 2020-05-25 Chengwei Chen , Wang Yuan , Xuequan Lu , Lizhuang Ma

Supervised learning-based adversarial attack detection methods rely on a large number of labeled data and suffer significant performance degradation when applying the trained model to new domains. In this paper, we propose a self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2024-07-08 Yi Li , Plamen Angelov , Neeraj Suri

The detection of AI-generated faces is commonly approached as a binary classification task. Nevertheless, the resulting detectors frequently struggle to adapt to novel AI face generators, which evolve rapidly. In this paper, we describe an…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Mian Zou , Baosheng Yu , Yibing Zhan , Kede Ma