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Facial micro-expression recognition (MER) is a challenging task, due to the transience, subtlety, and dynamics of micro-expressions (MEs). Most existing methods resort to hand-crafted features or deep networks, in which the former often…

Computer Vision and Pattern Recognition · Computer Science 2025-09-12 Zhiwen Shao , Yifan Cheng , Fan Zhang , Xuehuai Shi , Canlin Li , Lizhuang Ma , Dit-yan Yeung

This paper discusses the benefits of incorporating multimodal data for improving latent emotion recognition accuracy, focusing on micro-expression (ME) and physiological signals (PS). The proposed approach presents a novel multimodal…

Computer Vision and Pattern Recognition · Computer Science 2023-08-24 Liangfei Zhang , Yifei Qian , Ognjen Arandjelovic , Anthony Zhu

Frame-level micro- and macro-expression spotting methods require time-consuming frame-by-frame observation during annotation. Meanwhile, video-level spotting lacks sufficient information about the location and number of expressions during…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Wang-Wang Yu , Xian-Shi Zhang , Fu-Ya Luo , Yijun Cao , Kai-Fu Yang , Hong-Mei Yan , Yong-Jie Li

Micro-expressions (MEs) are spontaneous, unconscious facial expressions that have promising applications in various fields such as psychotherapy and national security. Thus, micro-expression recognition (MER) has attracted more and more…

Computer Vision and Pattern Recognition · Computer Science 2024-07-11 Ruolin Li , Lu Wang , Tingting Yang , Lisheng Xu , Bingyang Ma , Yongchun Li , Hongchao Wei

Micro-expressions (MEs) are infrequent and uncontrollable facial events that can highlight emotional deception and appear in a high-stakes environment. This paper propose an algorithm for spatiotemporal MEs spotting. Since MEs are unusual…

Computer Vision and Pattern Recognition · Computer Science 2019-03-12 Dawood Al Chanti , Alice Caplier

Facial micro-expressions are subtle and involuntary expressions that can reveal concealed emotions. Micro-expressions are an invaluable source of information in application domains such as lie detection, mental health, sentiment analysis…

Computer Vision and Pattern Recognition · Computer Science 2019-03-27 Michiel Verburg , Vlado Menkovski

This paper presents baseline results for the Third Facial Micro-Expression Grand Challenge (MEGC 2020). Both macro- and micro-expression intervals in CAS(ME)$^2$ and SAMM Long Videos are spotted by employing the method of Main Directional…

Computer Vision and Pattern Recognition · Computer Science 2020-03-23 Ying He , Su-Jing Wang , Jingting Li , Moi Hoon Yap

Facial micro-expressions (MEs) are involuntary facial motions revealing peoples real feelings and play an important role in the early intervention of mental illness, the national security, and many human-computer interaction systems.…

Computer Vision and Pattern Recognition · Computer Science 2022-08-22 Hanting Li , Mingzhe Sui , Zhaoqing Zhu , Feng Zhao

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

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

Micro-expression recognition (MER) aims to recognize the short and subtle facial movements from the Micro-expression (ME) video clips, which reveal real emotions. Recent MER methods mostly only utilize special frames from ME video clips or…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Haihong Hao , Shuo Wang , Huixia Ben , Yanbin Hao , Yansong Wang , Weiwei Wang

One of the most important subconscious reactions, micro-expression (ME), is a spontaneous, subtle, and transient facial expression that reveals human beings' genuine emotion. Therefore, automatically recognizing ME (MER) is becoming…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Sirui Zhao , Huaying Tang , Xinglong Mao , Shifeng Liu , Yiming Zhang , Hao Wang , Tong Xu , Enhong Chen

Micro-expression recognition plays a pivotal role in understanding hidden emotions and has applications across various fields. Traditional recognition methods assume access to all training data at once, but real-world scenarios involve…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Zhengqin Lai , Xiaopeng Hong , Yabin Wang , Xiaobai Li

This paper presents baseline results for the first Micro-Expression Spotting Challenge 2019 by evaluating local temporal pattern (LTP) on SAMM and CAS(ME)2. The proposed LTP patterns are extracted by applying PCA in a temporal window on…

Computer Vision and Pattern Recognition · Computer Science 2019-07-16 Jingting Li , Catherine Soladie , Renaud Sguier , Sujing Wang , Moi Hoon Yap

Micro-expression recognition (MER) is a challenging task due to the subtle and fleeting nature of micro-expressions. Traditional input modalities, such as Apex Frame, Optical Flow, and Dynamic Image, often fail to adequately capture these…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Luu Tu Nguyen , Vu Tram Anh Khuong , Thanh Ha Le , Thi Duyen Ngo

Micro-expression recognition (MER) is crucial in the affective computing field due to its wide application in medical diagnosis, lie detection, and criminal investigation. Despite its significance, obtaining micro-expression (ME)…

Computer Vision and Pattern Recognition · Computer Science 2025-08-14 Jiateng Liu , Hengcan Shi , Feng Chen , Zhiwen Shao , Yaonan Wang , Jianfei Cai , Wenming Zheng

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

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-expression recognition (MER) draws intensive research interest as micro-expressions (MEs) can infer genuine emotions. Prior information can guide the model to learn discriminative ME features effectively. However, most works focus on…

Computer Vision and Pattern Recognition · Computer Science 2023-03-06 Jinsheng Wei , Haoyu Chen , Guanming Lu , Jingjie Yan , Yue Xie , Guoying Zhao

As a spontaneous expression of emotion on face, micro-expression reveals the underlying emotion that cannot be controlled by human. In micro-expression, facial movement is transient and sparsely localized through time. However, the existing…

Computer Vision and Pattern Recognition · Computer Science 2021-03-16 Min Peng , Chongyang Wang , Yuan Gao , Tao Bi , Tong Chen , Yu Shi , Xiang-Dong Zhou