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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

Since Facial Action Unit (AU) annotations require domain expertise, common AU datasets only contain a limited number of subjects. As a result, a crucial challenge for AU detection is addressing identity overfitting. We find that AUs and…

Computer Vision and Pattern Recognition · Computer Science 2022-10-26 Zhipeng Hu , Wei Zhang , Lincheng Li , Yu Ding , Wei Chen , Zhigang Deng , Xin Yu

For the Facial Action Unit (AU) detection task, accurately capturing the subtle facial differences between distinct AUs is essential for reliable detection. Additionally, AU detection faces challenges from class imbalance and the presence…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Ziqiao Shang , Bin Liu , Fengmao Lv , Fei Teng , Tianrui Li , Lan-Zhe Guo

Current Facial Action Unit (FAU) detection methods generally encounter difficulties due to the scarcity of labeled video training data and the limited number of training face IDs, which renders the trained feature extractor insufficient…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Qiaoqiao Jin , Rui Shi , Yishun Dou , Bingbing Ni

Detecting action units (AUs) on human faces is challenging because various AUs make subtle facial appearance change over various regions at different scales. Current works have attempted to recognize AUs by emphasizing important regions.…

Computer Vision and Pattern Recognition · Computer Science 2019-08-27 Chen Ma , Li Chen , Junhai Yong

Facial action units (AUs), as defined in the Facial Action Coding System (FACS), have received significant research interest owing to their diverse range of applications in facial state analysis. Current mainstream FAU recognition models…

Computer Vision and Pattern Recognition · Computer Science 2024-08-02 Xuri Ge , Junchen Fu , Fuhai Chen , Shan An , Nicu Sebe , Joemon M. Jose

The spread of deepfakes poses significant security concerns, demanding reliable detection methods. However, diverse generation techniques and class imbalance in datasets create challenges. We propose CAE-Net, a Convolution- and…

Computer Vision and Pattern Recognition · Computer Science 2025-12-29 Anindya Bhattacharjee , Kaidul Islam , Kafi Anan , Ashir Intesher , Abrar Assaeem Fuad , Utsab Saha , Hafiz Imtiaz

Facial action unit (AU) detection and face alignment are two highly correlated tasks, since facial landmarks can provide precise AU locations to facilitate the extraction of meaningful local features for AU detection. However, most existing…

Computer Vision and Pattern Recognition · Computer Science 2020-09-25 Zhiwen Shao , Zhilei Liu , Jianfei Cai , Lizhuang Ma

Attention mechanism has recently attracted increasing attentions in the field of facial action unit (AU) detection. By finding the region of interest of each AU with the attention mechanism, AU-related local features can be captured. Most…

Computer Vision and Pattern Recognition · Computer Science 2019-10-21 Zhiwen Shao , Zhilei Liu , Jianfei Cai , Yunsheng Wu , Lizhuang Ma

High-quality annotated images are significant to deep facial expression recognition (FER) methods. However, uncertain labels, mostly existing in large-scale public datasets, often mislead the training process. In this paper, we achieve…

Computer Vision and Pattern Recognition · Computer Science 2023-01-02 Yang Liu , Xingming Zhang , Janne Kauttonen , Guoying Zhao

Recognizing human emotion/expressions automatically is quite an expected ability for intelligent robotics, as it can promote better communication and cooperation with humans. Current deep-learning-based algorithms may achieve impressive…

Computer Vision and Pattern Recognition · Computer Science 2021-04-05 Tao Pu , Tianshui Chen , Yuan Xie , Hefeng Wu , Liang Lin

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

Facial action units (AUs) are essential to decode human facial expressions. Researchers have focused on training AU detectors with a variety of features and classifiers. However, several issues remain. These are spatial representation,…

Computer Vision and Pattern Recognition · Computer Science 2016-08-03 Wen-Sheng Chu , Fernando De la Torre , Jeffrey F. Cohn

Facial action unit (AU) recognition is essential to facial expression analysis. Since there are highly positive or negative correlations between AUs, some existing AU recognition works have focused on modeling AU relations. However,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-26 Yao Wei , Haoxiang Wang , Mingze Sun , Jiawang Liu

Facial action units (AUs) detection is fundamental to facial expression analysis. As AU occurs only in a small area of the face, region-based learning has been widely recognized useful for AU detection. Most region-based studies focus on a…

Computer Vision and Pattern Recognition · Computer Science 2020-02-12 Yao Xia

Action Unit (AU) Detection is the branch of affective computing that aims at recognizing unitary facial muscular movements. It is key to unlock unbiased computational face representations and has therefore aroused great interest in the past…

Computer Vision and Pattern Recognition · Computer Science 2022-12-13 Gauthier Tallec , Edouard Yvinec , Arnaud Dapogny , Kevin Bailly

Facial Action Unit (AU) detection has gained significant attention as it enables the breakdown of complex facial expressions into individual muscle movements. In this paper, we revisit two fundamental factors in AU detection: diverse and…

Computer Vision and Pattern Recognition · Computer Science 2025-05-12 Mang Ning , Albert Ali Salah , Itir Onal Ertugrul

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

Detecting facial action units (AU) is one of the fundamental steps in automatic recognition of facial expression of emotions and cognitive states. Though there have been a variety of approaches proposed for this task, most of these models…

Computer Vision and Pattern Recognition · Computer Science 2019-11-28 Mihee Lee , Ognjen Rudovic , Vladimir Pavlovic , Maja Pantic

Recognition of facial expression is a challenge when it comes to computer vision. The primary reasons are class imbalance due to data collection and uncertainty due to inherent noise such as fuzzy facial expressions and inconsistent labels.…

Computer Vision and Pattern Recognition · Computer Science 2022-12-16 Jiaxiang Fan , Jian Zhou , Xiaoyu Deng , Huabin Wang , Liang Tao , Hon Keung Kwan
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