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Patient pain can be detected highly reliably from facial expressions using a set of facial muscle-based action units (AUs) defined by the Facial Action Coding System (FACS). A key characteristic of facial expression of pain is the…

Machine Learning · Computer Science 2018-02-21 Zhanli Chen , Rashid Ansari , Diana J. 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

In this paper an accurate real-time sequence-based system for representation, recognition, interpretation, and analysis of the facial action units (AUs) and expressions is presented. Our system has the following characteristics: 1)…

Computer Vision and Pattern Recognition · Computer Science 2010-04-06 Mahmoud Khademi , Mohammad Hadi Kiapour , Mohammad T. Manzuri-Shalmani , Ali A. Kiaei

Facial Action Units detection (FAUs) represents a fine-grained classification problem that involves identifying different units on the human face, as defined by the Facial Action Coding System. In this paper, we present a simple yet…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Tu Vu , Van Thong Huynh , Soo Hyung Kim

We present a novel facial expression recognition network, called Distract your Attention Network (DAN). Our method is based on two key observations. Firstly, multiple classes share inherently similar underlying facial appearance, and their…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Zhengyao Wen , Wenzhong Lin , Tao Wang , Ge Xu

The recently developed Equine Facial Action Coding System (EquiFACS) provides a precise and exhaustive, but laborious, manual labelling method of facial action units of the horse. To automate parts of this process, we propose a Deep…

Computer Vision and Pattern Recognition · Computer Science 2021-05-05 Zhenghong Li , Sofia Broomé , Pia Haubro Andersen , Hedvig Kjellström

Action Units (AUs) are geometrically-based atomic facial muscle movements known to produce appearance changes at specific facial locations. Motivated by this observation we propose a novel AU modelling problem that consists of jointly…

Computer Vision and Pattern Recognition · Computer Science 2020-04-15 Ioanna Ntinou , Enrique Sanchez , Adrian Bulat , Michel Valstar , Georgios Tzimiropoulos

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

Detecting manipulated facial images and videos is an increasingly important topic in digital media forensics. As advanced face synthesis and manipulation methods are made available, new types of fake face representations are being created…

Computer Vision and Pattern Recognition · Computer Science 2020-10-27 Hao Dang , Feng Liu , Joel Stehouwer , Xiaoming Liu , Anil Jain

The domain diversities including inconsistent annotation and varied image collection conditions inevitably exist among different facial expression recognition (FER) datasets, which pose an evident challenge for adapting the FER model…

Computer Vision and Pattern Recognition · Computer Science 2021-03-19 Kai Wang , Yuxin Gu , Xiaojiang Peng , Panpan Zhang , Baigui Sun , Hao Li

Facial Action Unit (AU) detection is a crucial task in affective computing and social robotics as it helps to identify emotions expressed through facial expressions. Anatomically, there are innumerable correlations between AUs, which…

Computer Vision and Pattern Recognition · Computer Science 2023-08-16 Xin Liu , Kaishen Yuan , Xuesong Niu , Jingang Shi , Zitong Yu , Huanjing Yue , Jingyu Yang

Automatic facial behavior analysis has a long history of studies in the intersection of computer vision, physiology and psychology. However it is only recently, with the collection of large-scale datasets and powerful machine learning…

Computer Vision and Pattern Recognition · Computer Science 2020-06-01 Dimitrios Kollias , Viktoriia Sharmanska , Stefanos Zafeiriou

We propose a novel convolutional neural network approach to address the fine-grained recognition problem of multi-view dynamic facial action unit detection. We leverage recent gains in large-scale object recognition by formulating the task…

Computer Vision and Pattern Recognition · Computer Science 2018-08-21 Andres Romero , Juan Leon , Pablo Arbelaez

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

Multimodal foundation models have significantly improved feature representation by integrating information from multiple modalities, making them highly suitable for a broader set of applications. However, the exploration of multimodal…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Kaiwen Zheng , Xuri Ge , Junchen Fu , Jun Peng , Joemon M. Jose

The Facial Action Coding System (FACS) for studying facial expressions is manual and requires significant effort and expertise. This paper explores the use of automated techniques to generate Action Units (AUs) for studying facial…

Computer Vision and Pattern Recognition · Computer Science 2024-06-14 Shivansh Chandra Tripathi , Rahul Garg

Facial action units (AUs) play an indispensable role in human emotion analysis. We observe that although AU-based high-level emotion analysis is urgently needed by real-world applications, frame-level AU results provided by previous works…

Computer Vision and Pattern Recognition · Computer Science 2023-05-12 Yingjie Chen , Jiarui Zhang , Tao Wang , Yun Liang

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

Video periocular recognition is the task of recognizing an individual's identity based on the region around an individual's eyes. The periocular area is one of the most discriminative regions of the human face, making it suitable for…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Luiz G F Carreira , Breno A Mariano , Victor H C de Melo , David Menotti , William Robson Schwartz

Pain is a common occurrence among patients admitted to Intensive Care Units. Pain assessment in ICU patients still remains a challenge for clinicians and ICU staff, specifically in cases of non-verbal sedated, mechanically ventilated, and…

Computer Vision and Pattern Recognition · Computer Science 2022-11-15 Subhash Nerella , Kia Khezeli , Andrea Davidson , Patrick Tighe , Azra Bihorac , Parisa Rashidi