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Related papers: Facial Micro-Expression Spotting and Recognition u…

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Being spontaneous, micro-expressions are useful in the inference of a person's true emotions even if an attempt is made to conceal them. Due to their short duration and low intensity, the recognition of micro-expressions is a difficult task…

Computer Vision and Pattern Recognition · Computer Science 2022-11-24 Liangfei Zhang , Xiaopeng Hong , Ognjen Arandjelovic , Guoying Zhao

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

Facial expression detection involves two interrelated tasks: spotting, which identifies the onset and offset of expressions, and recognition, which classifies them into emotional categories. Most existing methods treat these tasks…

Computer Vision and Pattern Recognition · Computer Science 2025-04-11 Yini Fang , Alec Diallo , Yiqi Shi , Frederic Jumelle , Bertram Shi

Facial expression spotting, identifying periods where facial expressions occur in a video, is a significant yet challenging task in facial expression analysis. The issues of irrelevant facial movements and the challenge of detecting subtle…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Yicheng Deng , Hideaki Hayashi , Hajime Nagahara

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

Facial expression spotting is the preliminary step for micro- and macro-expression analysis. The task of reliably spotting such expressions in video sequences is currently unsolved. The current best systems depend upon optical flow methods…

Computer Vision and Pattern Recognition · Computer Science 2022-05-30 Chuin Hong Yap , Moi Hoon Yap , Adrian K. Davison , Connah Kendrick , Jingting Li , Sujing Wang , Ryan Cunningham

Micro-expression recognition is one of the most challenging topics in affective computing. It aims to recognize tiny facial movements difficult for humans to perceive in a brief period, i.e., 0.25 to 0.5 seconds. Recent advances in…

Computer Vision and Pattern Recognition · Computer Science 2023-04-07 Xuan-Bac Nguyen , Chi Nhan Duong , Xin Li , Susan Gauch , Han-Seok Seo , Khoa Luu

Temporal information can provide useful features for recognizing facial expressions. However, to manually design useful features requires a lot of effort. In this paper, to reduce this effort, a deep learning technique which is regarded as…

Computer Vision and Pattern Recognition · Computer Science 2015-03-06 Heechul Jung , Sihaeng Lee , Sunjeong Park , Injae Lee , Chunghyun Ahn , Junmo Kim

When a person attempts to conceal an emotion, the genuine emotion is manifest as a micro-expression. Exploration of automatic facial micro-expression recognition systems is relatively new in the computer vision domain. This is due to the…

Computer Vision and Pattern Recognition · Computer Science 2018-05-23 Sze-Teng Liong , Y. S. Gan , Wei-Chuen Yau , Yen-Chang Huang , Tan Lit Ken

Humans modify their facial expressions in order to communicate their internal states and sometimes to mislead observers regarding their true emotional states. Evidence in experimental psychology shows that discriminative facial responses…

Computer Vision and Pattern Recognition · Computer Science 2018-01-10 Kaustubh Kulkarni , Ciprian Adrian Corneanu , Ikechukwu Ofodile , Sergio Escalera , Xavier Baro , Sylwia Hyniewska , Juri Allik , Gholamreza Anbarjafari

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 are brief and subtle facial movements that convey nuanced affective information but often remain imperceptible during natural social interaction. Although prior research has primarily focused on computational recognition…

Human-Computer Interaction · Computer Science 2026-04-29 Feiyang Yin , Isidro Butaslac , Patrick Gebhard , Monica Perusquia-Hernandez , Zhaofeng Niu , Taishi Sawabe , Hirokazu Kato

Facial micro-expressions are spontaneous, brief and subtle facial motions that unveil the underlying, suppressed emotions. Detecting Action Units (AUs) in micro-expressions is crucial because it yields a finer representation of facial…

Computer Vision and Pattern Recognition · Computer Science 2025-04-15 Huai-Qian Khor , Yante Li , Xingxun Jiang , Guoying Zhao

Complex emotion recognition is a cognitive task that has so far eluded the same excellent performance of other tasks that are at or above the level of human cognition. Emotion recognition through facial expressions is particularly difficult…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Angus Maiden , Bahareh Nakisa

The diversity of facial shapes and motions among persons is one of the greatest challenges for automatic analysis of facial expressions. In this paper, we propose a feature describing expression intensity over time, while being invariant to…

Computer Vision and Pattern Recognition · Computer Science 2018-05-04 Maren Awiszus , Stella Graßhof , Felix Kuhnke , Jörn Ostermann

Facial expression is a standout amongst the most imperative features of human emotion recognition. For demonstrating the emotional states facial expressions are utilized by the people. In any case, recognition of facial expressions has…

Computer Vision and Pattern Recognition · Computer Science 2020-09-30 S. D. Lalitha , K. K. Thyagharajan

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

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

Unlike macro-expression, micro-expression does not follow a strictly consistent mapping rule between emotions and Action Units (AUs). As a result, some micro-expressions share identical AUs yet represent completely opposite emotional…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Chenxing Hu , Kun Xie , Qiguang Miao , Ruyi Liu , Quan Wang , Zongkai Yang

Micro-expressions are subtle facial movements that occur spontaneously when people try to conceal real emotions. Micro-expression recognition is crucial in many fields, including criminal analysis and psychotherapy. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-03 Guanghao Zhu , Lin Liu , Yuhao Hu , Haixin Sun , Fang Liu , Xiaohui Du , Ruqian Hao , Juanxiu Liu , Yong Liu , Hao Deng , Jing Zhang