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Micro-expressions (MEs) are subtle, transient facial changes with very low intensity, almost imperceptible to the naked eye, yet they reveal a person genuine emotion. They are of great value in lie detection, behavioral analysis, and…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Thi Bich Phuong Man , Luu Tu Nguyen , Vu Tram Anh Khuong , Thanh Ha Le , Thi Duyen Ngo

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

Facial Expression Recognition (FER) in the wild is extremely challenging due to occlusions, variant head poses, face deformation and motion blur under unconstrained conditions. Although substantial progresses have been made in automatic FER…

Computer Vision and Pattern Recognition · Computer Science 2022-05-12 Fuyan Ma , Bin Sun , Shutao Li

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

Extensive efforts have been devoted to recognizing facial action units (AUs). However, it is still challenging to recognize AUs from spontaneous facial displays especially when they are accompanied with speech. Different from all prior work…

Computer Vision and Pattern Recognition · Computer Science 2017-09-20 Zibo Meng , Shizhong Han , Yan Tong

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

Pain is a complex condition that affects a large portion of the population. Accurate and consistent evaluation is essential for individuals experiencing pain and supports the development of effective and advanced management strategies.…

Artificial Intelligence · Computer Science 2025-09-17 Stefanos Gkikas , Ioannis Kyprakis , Manolis Tsiknakis

In this paper we propose a fusion approach to continuous emotion recognition that combines visual and auditory modalities in their representation spaces to predict the arousal and valence levels. The proposed approach employs a pre-trained…

Machine Learning · Computer Science 2019-06-26 Juan D. S. Ortega , Patrick Cardinal , Alessandro L. Koerich

Depression is one of the most prevalent mental disorders, which seriously affects one's life. Traditional depression diagnostics commonly depends on rating with scales, which can be labor-intensive and subjective. In this context, Automatic…

Machine Learning · Computer Science 2022-03-02 Yanrong Guo , Chenyang Zhu , Shijie Hao , Richang Hong

In this paper, we present SAFER, a novel system for emotion recognition from facial expressions. It employs state-of-the-art deep learning techniques to extract various features from facial images and incorporates contextual information,…

Computer Vision and Pattern Recognition · Computer Science 2023-06-19 Mijanur Palash , Bharat Bhargava

An automatic Facial Expression Recognition (FER) model with Adaboost face detector, feature selection based on manifold learning and synergetic prototype based classifier has been proposed. Improved feature selection method and proposed…

Computer Vision and Pattern Recognition · Computer Science 2018-03-30 Chendi Wang

We provide a new non-invasive, easy-to-scale for large amounts of subjects and a remotely accessible method for (hidden) emotion detection from videos of human faces. Our approach combines face manifold detection for accurate location of…

Computer Vision and Pattern Recognition · Computer Science 2022-11-02 Juni Kim , Zhikang Dong , Eric Guan , Judah Rosenthal , Shi Fu , Miriam Rafailovich , Pawel Polak

Automatic detection of facial Action Units (AUs) allows for objective facial expression analysis. Due to the high cost of AU labeling and the limited size of existing benchmarks, previous AU detection methods tend to overfit the dataset,…

Computer Vision and Pattern Recognition · Computer Science 2023-08-25 Yufeng Yin , Di Chang , Guoxian Song , Shen Sang , Tiancheng Zhi , Jing Liu , Linjie Luo , Mohammad Soleymani

Affective Behavior Analysis aims to facilitate technology emotionally smart, creating a world where devices can understand and react to our emotions as humans do. To comprehensively evaluate the authenticity and applicability of emotional…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Wei Zhang , Feng Qiu , Chen Liu , Lincheng Li , Heming Du , Tiancheng Guo , Xin 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

We propose a novel domain adaptive action detection approach and a new adaptation protocol that leverages the recent advancements in image-level unsupervised domain adaptation (UDA) techniques and handle vagaries of instance-level video…

Computer Vision and Pattern Recognition · Computer Science 2022-10-07 Yifan Lu , Gurkirt Singh , Suman Saha , Luc Van Gool

Customizable 3D avatar-based facial expression stimuli may improve user engagement in behavioral biomarker discovery and therapeutic intervention for autism, Alzheimer's disease, facial palsy, and more. However, there is a lack of…

The study proposes and tests a technique for automated emotion recognition through mouth detection via Convolutional Neural Networks (CNN), meant to be applied for supporting people with health disorders with communication skills issues…

Computer Vision and Pattern Recognition · Computer Science 2022-12-13 Giulio Biondi , Valentina Franzoni , Osvaldo Gervasi , Damiano Perri

Machine learning models automatically learn discriminative features from the data, and are therefore susceptible to learn strongly-correlated biases, such as using protected attributes like gender and race. Most existing bias mitigation…

Computer Vision and Pattern Recognition · Computer Science 2023-03-10 Varsha Suresh , Desmond C. Ong

Action Unit (AU) detection plays an important role for facial expression recognition. To the best of our knowledge, there is little research about AU analysis for micro-expressions. In this paper, we focus on AU detection in…

Computer Vision and Pattern Recognition · Computer Science 2020-04-13 Yante Li , Xiaohua Huang , Guoying Zhao