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Most research on facial expression recognition (FER) is conducted in highly controlled environments, but its performance is often unacceptable when applied to real-world situations. This is because when unexpected objects occlude the face,…

Computer Vision and Pattern Recognition · Computer Science 2023-07-24 Isack Lee , Eungi Lee , Seok Bong Yoo

The performance of face detection has been largely improved with the development of convolutional neural network. However, the occlusion issue due to mask and sunglasses, is still a challenging problem. The improvement on the recall of…

Computer Vision and Pattern Recognition · Computer Science 2017-11-23 Jianfeng Wang , Ye Yuan , Gang Yu

Facial micro-expression recognition (MER) is a challenging problem, due to transient and subtle micro-expression (ME) actions. Most existing methods depend on hand-crafted features, key frames like onset, apex, and offset frames, or deep…

Computer Vision and Pattern Recognition · Computer Science 2025-06-18 Zhiwen Shao , Yifan Cheng , Feiran Li , Yong Zhou , Xuequan Lu , Yuan Xie , Lizhuang Ma

Facial Expression Recognition is a vital research topic in most fields ranging from artificial intelligence and gaming to Human-Computer Interaction (HCI) and Psychology. This paper proposes a hybrid model for Facial Expression recognition,…

Computer Vision and Pattern Recognition · Computer Science 2022-08-02 Ozioma Collins Oguine , Kanyifeechukwu Jane Oguine , Hashim Ibrahim Bisallah , Daniel Ofuani

Micro-expression recognition (MER) is a highly challenging task in affective computing. With the reduced-sized micro-expression (ME) input that contains key information based on key-frame indexes, key-frame-based methods have significantly…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Zheyuan Zhang , Weihao Tang , Hong Chen

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 expression is an essential factor in conveying human emotional states and intentions. Although remarkable advancement has been made in facial expression recognition (FER) task, challenges due to large variations of expression…

Computer Vision and Pattern Recognition · Computer Science 2022-07-28 Jie Lei , Zhao Liu , Zeyu Zou , Tong Li , Xu Juan , Shuaiwei Wang , Guoyu Yang , Zunlei Feng

Magnetic resonance imaging (MRI) is a valuable clinical tool for displaying anatomical structures and aiding in accurate diagnosis. Medical image super-resolution (SR) reconstruction using deep learning techniques can enhance lesion…

Computer Vision and Pattern Recognition · Computer Science 2023-05-30 Xin Hua , Zhijiang Du , Hongjian Yu , Jixin Maa

Deep learning approaches have achieved highly accurate face recognition by training the models with very large face image datasets. Unlike the availability of large 2D face image datasets, there is a lack of large 3D face datasets available…

Computer Vision and Pattern Recognition · Computer Science 2021-12-23 Meng-Tzu Chiu , Hsun-Ying Cheng , Chien-Yi Wang , Shang-Hong Lai

Emotion recognition (ER) from facial images is one of the landmark tasks in affective computing with major developments in the last decade. Initial efforts on ER relied on handcrafted features that were used to characterize facial images…

Computer Vision and Pattern Recognition · Computer Science 2021-09-09 Fernanda Hernández-Luquin , Hugo Jair Escalante

In occluded person re-identification(ReID), severe occlusions lead to a significant amount of irrelevant information that hinders the accurate identification of individuals. These irrelevant cues primarily stem from background interference…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Zhaoyong Wang , Yujie Liu , Mingyue Li , Wenxin Zhang , Zongmin Li

Facial appearance variations due to occlusion has been one of the main challenges for face recognition systems. To facilitate further research in this area, it is necessary and important to have occluded face datasets collected from…

Computer Vision and Pattern Recognition · Computer Science 2021-09-14 Mustafa Ekrem Erakın , Uğur Demir , Hazım Kemal Ekenel

In many domains, including online education, healthcare, security, and human-computer interaction, facial emotion recognition (FER) is essential. Real-world FER is still difficult despite its significance because of some factors such as…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Deeptimaan Banerjee , Prateek Gothwal , Ashis Kumer Biswas

Residual-based neural networks have shown remarkable results in various visual recognition tasks including Facial Expression Recognition (FER). Despite the tremendous efforts have been made to improve the performance of FER systems using…

Computer Vision and Pattern Recognition · Computer Science 2020-04-17 Behzad Hasani , Pooran Singh Negi , Mohammad H. Mahoor

Micro-expressions recognition (MER) has essential application value in many fields, but the short duration and low intensity of micro-expressions (MEs) bring considerable challenges to MER. The current MER methods in deep learning mainly…

Computer Vision and Pattern Recognition · Computer Science 2025-08-20 Liangyu Fu , Xuecheng Wu , Danlei Huang , Xinyi Yin

The encoding of the target in object tracking moves from the coarse bounding-box to fine-grained segmentation map recently. Revisiting de facto real-time approaches that are capable of predicting mask during tracking, we observed that they…

Computer Vision and Pattern Recognition · Computer Science 2021-11-03 Zhipeng Zhang , Bing Li , Weiming Hu , Houwen Peng

Emotion recognition in conversation (ERC) is a crucial component in affective dialogue systems, which helps the system understand users' emotions and generate empathetic responses. However, most works focus on modeling speaker and…

Computation and Language · Computer Science 2021-07-15 Jingwen Hu , Yuchen Liu , Jinming Zhao , Qin Jin

Emotion recognition can provide crucial information about the user in many applications when building human-computer interaction (HCI) systems. Most of current researches on visual emotion recognition are focusing on exploring facial…

Computer Vision and Pattern Recognition · Computer Science 2018-05-31 Man-Chin Sun , Shih-Huan Hsu , Min-Chun Yang , Jen-Hsien Chien

This paper presents a novel descriptor named Region based Extensive Response Index Pattern (RETRaIN) for facial expression recognition. The RETRaIN encodes the relation among the reference and neighboring pixels of facial active regions.…

Computer Vision and Pattern Recognition · Computer Science 2018-11-27 Monu Verma , Santosh. K. Vipparthi , Girdhari Singh

Given that approximately half of science, technology, engineering, and mathematics (STEM) undergraduate students in U.S. colleges and universities leave by the end of the first year [15], it is crucial to improve the quality of classroom…

Computer Vision and Pattern Recognition · Computer Science 2024-03-01 Shrouk Wally , Ahmed Elsayed , Islam Alkabbany , Asem Ali , Aly Farag