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Facial expression analysis is central to understanding human behavior, yet existing coding systems such as the Facial Action Coding System (FACS) are constrained by limited coverage and costly manual annotation. In this work, we introduce…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Minh Tran , Maksim Siniukov , Zhangyu Jin , Mohammad Soleymani

Understanding pain-related facial behaviors is essential for digital healthcare in terms of effective monitoring, assisted diagnostics, and treatment planning, particularly for patients unable to communicate verbally. Existing data-driven…

Machine Learning · Computer Science 2025-06-18 Zhiyu Wang , Yang Liu , Hatice Gunes

Temporal context is key to the recognition of expressions of emotion. Existing methods, that rely on recurrent or self-attention models to enforce temporal consistency, work on the feature level, ignoring the task-specific temporal…

Computer Vision and Pattern Recognition · Computer Science 2021-03-25 Enrique Sanchez , Mani Kumar Tellamekala , Michel Valstar , Georgios Tzimiropoulos

Automatic recognition of facial gestures is becoming increasingly important as real world AI agents become a reality. In this paper, we present an automated system that recognizes facial gestures by capturing local changes and encoding the…

Computer Vision and Pattern Recognition · Computer Science 2017-06-13 Nadav Israel , Lior Wolf , Ran Barzilay , Gal Shoval

Employing deep learning-based approaches for fine-grained facial expression analysis, such as those involving the estimation of Action Unit (AU) intensities, is difficult due to the lack of a large-scale dataset of real faces with…

Computer Vision and Pattern Recognition · Computer Science 2019-05-31 Zhilei Liu , Guoxian Song , Jianfei Cai , Tat-Jen Cham , Juyong Zhang

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

Emotion is an experience associated with a particular pattern of physiological activity along with different physiological, behavioral and cognitive changes. One behavioral change is facial expression, which has been studied extensively…

Computer Vision and Pattern Recognition · Computer Science 2022-03-31 Xiaotian Li , Xiang Zhang , Huiyuan Yang , Wenna Duan , Weiying Dai , Lijun Yin

Training facial emotion recognition models requires large sets of data and costly annotation processes. To alleviate this problem, we developed a gamified method of acquiring annotated facial emotion data without an explicit labeling effort…

Computer Vision and Pattern Recognition · Computer Science 2022-11-10 Krist Shingjergji , Deniz Iren , Felix Bottger , Corrie Urlings , Roland Klemke

Emotion detection in older adults is crucial for understanding their cognitive and emotional well-being, especially in hospital and assisted living environments. In this work, we investigate an edge-based, non-obtrusive approach to emotion…

Human-Computer Interaction · Computer Science 2025-07-14 Md. Saif Hassan Onim , Andrew M. Kiselica , Himanshu Thapliyal

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 expressions are an important way through which humans interact socially. Building a system capable of automatically recognizing facial expressions from images and video has been an intense field of study in recent years. Interpreting…

Computer Vision and Pattern Recognition · Computer Science 2016-06-13 Ciprian Corneanu , Marc Oliu , Jeffrey F. Cohn , Sergio Escalera

A look is worth a thousand words is a popular phrase. And why is a simple look enough to portray our feelings about something or someone? Behind this question are the theoretical foundations of the field of psychology regarding social…

Computer Vision and Pattern Recognition · Computer Science 2023-12-05 Vitor Miguel Xavier Peres , Greice Pinho Dal Molin , Soraia Raupp Musse

Affective computing - combining sensor technology, machine learning, and psychology - have been studied for over three decades and is employed in AI-powered technologies to enhance emotional awareness in AI systems, and detect symptoms of…

Audio and Speech Processing · Electrical Eng. & Systems 2026-04-21 Anders Rolighed Larsen , Sneha Das , Nicole Nadine Lønfeldt , Paula Petcu , Line Clemmensen

Facial expression recognition is a crucial component in enhancing human-computer interaction and developing emotion-aware systems. Real-time detection and interpretation of facial expressions have become increasingly important for various…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Talha Enes Koksal , Abdurrahman Gumus

A micro-expression is a spontaneous unconscious facial muscle movement that can reveal the true emotions people attempt to hide. Although manual methods have made good progress and deep learning is gaining prominence. Due to the short…

Computer Vision and Pattern Recognition · Computer Science 2023-01-12 Fengping Wang , Jie Li , Chun Qi , Lin Wang , Pan Wang

Although psychological research indicates that bodily expressions convey important affective information, to date research in emotion recognition focused mainly on facial expression or voice analysis. In this paper we propose an approach to…

Human-Computer Interaction · Computer Science 2014-02-21 Stefano Piana , Alessandra Staglianò , Francesca Odone , Alessandro Verri , Antonio Camurri

The analysis of expression and facial Action Units (AUs) detection are very important tasks in fields of computer vision and Human Computer Interaction (HCI) due to the wide range of applications in human life. Many works has been done…

Computer Vision and Pattern Recognition · Computer Science 2015-11-09 Mohammadamin Abbasnejad , Mohammad Ali Masnadi-Shirazi

Automated affective computing in the wild setting is a challenging problem in computer vision. Existing annotated databases of facial expressions in the wild are small and mostly cover discrete emotions (aka the categorical model). There…

Computer Vision and Pattern Recognition · Computer Science 2018-02-06 Ali Mollahosseini , Behzad Hasani , Mohammad H. Mahoor

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

This work introduces an innovative method for estimating attention levels (cognitive load) using an ensemble of facial analysis techniques applied to webcam videos. Our method is particularly useful, among others, in e-learning…

Human-Computer Interaction · Computer Science 2024-08-15 Roberto Daza , Luis F. Gomez , Julian Fierrez , Aythami Morales , Ruben Tolosana , Javier Ortega-Garcia