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Unlike the conventional facial expressions, micro-expressions are involuntary and transient facial expressions capable of revealing the genuine emotions that people attempt to hide. Therefore, they can provide important information in a…

Computer Vision and Pattern Recognition · Computer Science 2022-02-17 Xianye Ben , Yi Ren , Junping Zhang , Su-Jing Wang , Kidiyo Kpalma , Weixiao Meng , Yong-Jin Liu

Micro-expressions (MEs) are brief and involuntary facial expressions that occur when people are trying to hide their true feelings or conceal their emotions. Based on psychology research, MEs play an important role in understanding genuine…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Thuong-Khanh Tran , Quang-Nhat Vo , Xiaopeng Hong , Xiaobai Li , Guoying Zhao

Facial micro-expressions indicate brief and subtle facial movements that appear during emotional communication. In comparison to macro-expressions, micro-expressions are more challenging to be analyzed due to the short span of time and the…

Computer Vision and Pattern Recognition · Computer Science 2020-12-22 Hong-Xia Xie , Ling Lo , Hong-Han Shuai , Wen-Huang Cheng

Facial micro-expressions are very brief, spontaneous facial expressions that appear on the face of humans when they either deliberately or unconsciously conceal an emotion. Micro-expression has shorter duration than macro-expression, which…

Computer Vision and Pattern Recognition · Computer Science 2018-05-08 Walied Merghani , Adrian K. Davison , Moi Hoon Yap

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-expressions (MEs) are brief, subtle facial expressions that reveal concealed emotions, offering key behavioral cues for social interaction. Characterized by short duration, low intensity, and spontaneity, MEs have been mostly studied…

Human-Computer Interaction · Computer Science 2024-09-04 Jingting Li , Shaoyuan Lu , Yan Wang , Zizhao Dong , Su-Jing Wang , Xiaolan Fu

The Medical Internet of Things, a recent technological advancement in medicine, is incredibly helpful in providing real-time monitoring of health metrics. This paper presents a non-invasive IoT system that tracks patients' emotions,…

Machine Learning · Computer Science 2022-09-15 Fiona Victoria Stanley Jothiraj , Afra Mashhadi

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

Over the last few years, automatic facial micro-expression analysis has garnered increasing attention from experts across different disciplines because of its potential applications in various fields such as clinical diagnosis, forensic…

Computer Vision and Pattern Recognition · Computer Science 2018-06-18 Yee-Hui Oh , John See , Anh Cat Le Ngo , Raphael Chung-Wei Phan , Vishnu Monn Baskaran

Micro-expressions (MEs) are subtle, fleeting nonverbal cues that reveal an individual's genuine emotional state. Their analysis has attracted considerable interest due to its promising applications in fields such as healthcare, criminal…

Computer Vision and Pattern Recognition · Computer Science 2025-06-13 Chuang Ma , Yu Pei , Jianhang Zhang , Shaokai Zhao , Bowen Ji , Liang Xie , Ye Yan , Erwei Yin

Micro-expressions (MEs) are involuntary facial movements revealing people's hidden feelings in high-stake situations and have practical importance in medical treatment, national security, interrogations and many human-computer interaction…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Yante Li , Jinsheng Wei , Yang Liu , Janne Kauttonen , Guoying Zhao

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

Micro-expressions (MEs) are brief, low-intensity, often localized facial expressions. They could reveal genuine emotions individuals may attempt to conceal, valuable in contexts like criminal interrogation and psychological counseling.…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Jingting Li , Yu Qian , Lin Zhao , Su-Jing Wang

Micro-expressions (MEs), brief and low-intensity facial movements revealing concealed emotions, are crucial for affective computing. Despite notable progress in ME recognition, existing methods are largely confined to discrete emotion…

Computer Vision and Pattern Recognition · Computer Science 2025-12-10 Sirui Zhao , Zhengye Zhang , Shifeng Liu , Xinglong Mao , Shukang Yin , Chaoyou Fu , Tong Xu , Enhong Chen

Micro-expressions are nonverbal facial expressions that reveal the covert emotions of individuals, making the micro-expression recognition task receive widespread attention. However, the micro-expression recognition task is challenging due…

Image and Video Processing · Electrical Eng. & Systems 2024-06-13 Ren Zhang , Jianqin Yin , Chao Qi , Zehao Wang , Zhicheng Zhang , Yonghao Dang

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 2026-03-11 Xinqi Fan , Jingting Li , John See , Moi Hoon Yap , Su-Jing Wang , Adrian K. Davison

Micro-expressions are brief spontaneous facial expressions that appear on a face when a person conceals an emotion, making them different to normal facial expressions in subtlety and duration. Currently, emotion classes within the CASME II…

Computer Vision and Pattern Recognition · Computer Science 2017-12-05 Adrian K. Davison , Walied Merghani , Moi Hoon Yap

The significance of emotion detection is increasing in education, entertainment, and various other domains. We are developing a system that can identify and transform facial expressions into emojis to provide immediate feedback.The project…

Computer Vision and Pattern Recognition · Computer Science 2024-07-08 Abhilash Khuntia , Shubham Kale

Emotion Recognition (ER) is the process of identifying human emotions from given data. Currently, the field heavily relies on facial expression recognition (FER) because facial expressions contain rich emotional cues. However, it is…

Computer Vision and Pattern Recognition · Computer Science 2024-11-20 Yuanyuan Liu , Lin Wei , Kejun Liu , Yibing Zhan , Zijing Chen , Zhe Chen , Shiguang Shan

Automatic machine-based Facial Expression Analysis (FEA) has made substantial progress in the past few decades driven by its importance for applications in psychology, security, health, entertainment and human computer interaction. The vast…

Computer Vision and Pattern Recognition · Computer Science 2018-02-27 Ligang Zhang , Brijesh Verma , Dian Tjondronegoro , Vinod Chandran
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