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In this paper, we present an approach based on convolutional neural networks (CNNs) for facial expression recognition in a difficult setting with severe occlusions. More specifically, our task is to recognize the facial expression of a…

Computer Vision and Pattern Recognition · Computer Science 2019-11-13 Mariana-Iuliana Georgescu , Radu Tudor Ionescu

For many years, the emotion recognition task has remained one of the most interesting and important problems in the field of human-computer interaction. In this study, we consider the emotion recognition task as a classification as well as…

Computer Vision and Pattern Recognition · Computer Science 2020-06-22 Denis Rangulov , Muhammad Fahim

Deriving an effective facial expression recognition component is important for a successful human-computer interaction system. Nonetheless, recognizing facial expression remains a challenging task. This paper describes a novel approach…

Computer Vision and Pattern Recognition · Computer Science 2019-04-15 Mundher Al-Shabi , Wooi Ping Cheah , Tee Connie

Responsive and accurate facial expression recognition is crucial to human-robot interaction for daily service robots. Nowadays, event cameras are becoming more widely adopted as they surpass RGB cameras in capturing facial expression…

Computer Vision and Pattern Recognition · Computer Science 2025-12-11 Zhe Wang , Qijin Song , Yucen Peng , Weibang Bai

Unlike prevalent facial expressions, micro expressions have subtle, involuntary muscle movements which are short-lived in nature. These minute muscle movements reflect true emotions of a person. Due to the short duration and low intensity,…

Computer Vision and Pattern Recognition · Computer Science 2020-01-08 Monu Verma , Santosh Kumar Vipparthi , Girdhari Singh , Subrahmanyam Murala

Facial expression is the most natural means for human beings to communicate their emotions. Most facial expression analysis studies consider the case of acted expressions. Spontaneous facial expression recognition is significantly more…

Computer Vision and Pattern Recognition · Computer Science 2018-10-02 Dawood Al Chanti , Alice Caplier

Facial micro-expressions (MEs) are involuntary movements of the face that occur spontaneously when a person experiences an emotion but attempts to suppress or repress the facial expression, typically found in a high-stakes environment. In…

Computer Vision and Pattern Recognition · Computer Science 2025-10-16 Xinqi Fan , Jingting Li , John See , Moi Hoon Yap , Wen-Huang Cheng , Xiaobai Li , Xiaopeng Hong , Su-Jing Wang , Adrian K. Davision

In the current era, biometric based access control is becoming more popular due to its simplicity and ease to use by the users. It reduces the manual work of identity recognition and facilitates the automatic processing. The face is one of…

Computer Vision and Pattern Recognition · Computer Science 2019-03-28 Chaitanya Nagpal , Shiv Ram Dubey

Micro-expressions (MEs) are rapid, involuntary facial expressions which reveal emotions that people do not intend to show. Studying MEs is valuable as recognizing them has many important applications, particularly in forensic science and…

Computer Vision and Pattern Recognition · Computer Science 2017-03-14 Xiaobai Li , Xiaopeng Hong , Antti Moilanen , Xiaohua Huang , Tomas Pfister , Guoying Zhao , Matti Pietikäinen

Micro-expression (ME) recognition plays a crucial role in a wide range of applications, particularly in public security and psychotherapy. Recently, traditional methods rely excessively on machine learning design and the recognition rate is…

Computer Vision and Pattern Recognition · Computer Science 2020-11-11 Jinming Liu , Ke Li , Baolin Song , Li Zhao

Neural network based algorithms has shown success in many applications. In image processing, Convolutional Neural Networks (CNN) can be trained to categorize facial expressions of images of human faces. In this work, we create a system that…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Qinchen Wang , Sixuan Wu , Tingfeng Xia

Micro-expression recognition (MER) has drawn increasing attention in recent years due to its potential applications in intelligent medical and lie detection. However, the shortage of annotated data has been the major obstacle to further…

Computer Vision and Pattern Recognition · Computer Science 2024-06-05 Hanting Li , Hongjing Niu , Feng Zhao

Micro-expressions are involuntary facial movements that cannot be consciously controlled, conveying subtle cues with substantial real-world applications. The analysis of micro-expressions generally involves two main tasks: spotting…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Bochao Zou , Zizheng Guo , Wenfeng Qin , Xin Li , Kangsheng Wang , Huimin Ma

Facial micro-expression (ME) recognition has posed a huge challenge to researchers for its subtlety in motion and limited databases. Recently, handcrafted techniques have achieved superior performance in micro-expression recognition but at…

Computer Vision and Pattern Recognition · Computer Science 2018-05-23 Huai-Qian Khor , John See , Raphael C. W. Phan , Weiyao Lin

Micro-expression analysis has applications in domains such as Human-Robot Interaction and Driver Monitoring Systems. Accurately capturing subtle and fast facial movements remains difficult when relying solely on RGB cameras, due to…

Computer Vision and Pattern Recognition · Computer Science 2025-08-22 Nicolas Mastropasqua , Ignacio Bugueno-Cordova , Rodrigo Verschae , Daniel Acevedo , Pablo Negri , Maria E. Buemi

In this paper, an effective pipeline to automatic 4D Facial Expression Recognition (4D FER) is proposed. It combines two growing but disparate ideas in Computer Vision -- computing the spatial facial deformations using tools from Riemannian…

Computer Vision and Pattern Recognition · Computer Science 2021-05-07 Qingkai Zhen , Di Huang , Yunhong Wang , Hassen Drira , Boulbaba Ben Amor , Mohamed Daoudi

Spatio-temporal information is very important to capture the discriminative cues between genuine and fake faces from video sequences. To explore such a temporal feature, the fine-grained motions (e.g., eye blinking, mouth movements and head…

Computer Vision and Pattern Recognition · Computer Science 2019-01-18 Xiaoguang Tu , Hengsheng Zhang , Mei Xie , Yao Luo , Yuefei Zhang , Zheng Ma

Micro-expressions are short bursts of emotion that are difficult to hide. Their detection in children is an important cue to assist psychotherapists in conducting better therapy. However, existing research on the detection of…

Computer Vision and Pattern Recognition · Computer Science 2025-03-28 Nikin~Matharaarachchi , Muhammad~Fermi Pasha , Sonya~Coleman , Kah PengWong

Facial Expression Recognition from static images is a challenging problem in computer vision applications. Convolutional Neural Network (CNN), the state-of-the-art method for various computer vision tasks, has had limited success in…

Computer Vision and Pattern Recognition · Computer Science 2021-11-05 Rohan Wadhawan , Tapan K. Gandhi

Despite the steady progress in video analysis led by the adoption of convolutional neural networks (CNNs), the relative improvement has been less drastic as that in 2D static image classification. Three main challenges exist including…

Computer Vision and Pattern Recognition · Computer Science 2018-07-30 Saining Xie , Chen Sun , Jonathan Huang , Zhuowen Tu , Kevin Murphy