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Spatial-temporal data contains rich information and has been widely studied in recent years due to the rapid development of relevant applications in many fields. For instance, medical institutions often use electrodes attached to different…

Machine Learning · Computer Science 2023-09-15 Tiehua Zhang , Yuze Liu , Zhishu Shen , Rui Xu , Xin Chen , Xiaowei Huang , Xi Zheng

Dynamic facial expression recognition (DFER) in the wild is still hindered by data limitations, e.g., insufficient quantity and diversity of pose, occlusion and illumination, as well as the inherent ambiguity of facial expressions. In…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Yin Chen , Jia Li , Shiguang Shan , Meng Wang , Richang Hong

Multimodal emotion recognition (MER) seeks to integrate various modalities to predict emotional states accurately. However, most current research focuses solely on the fusion of audio and text features, overlooking the valuable information…

Sound · Computer Science 2025-04-08 Xuechun Shao , Yinfeng Yu , Liejun Wang

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 are spontaneous, unconscious facial movements that show people's true inner emotions and have great potential in related fields of psychological testing. Since the face is a 3D deformation object, the occurrence of an…

Computer Vision and Pattern Recognition · Computer Science 2022-04-21 Fengping Wang , Jie Li , Siqi Zhang , Chun Qi , Yun Zhang , Danmin Miao

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

An objective and accurate emotion diagnostic reference is vital to psychologists, especially when dealing with patients who are difficult to communicate with for pathological reasons. Nevertheless, current systems based on…

Machine Learning · Computer Science 2024-06-21 Yimin Zhao , Jin Gu

In the age of AI-driven generative technologies, traditional biometric recognition systems face unprecedented challenges, particularly from sophisticated deepfake and face reenactment techniques. In this study, we propose a Two-Stream…

Computer Vision and Pattern Recognition · Computer Science 2025-06-25 Masoumeh Chapariniya , Hossein Ranjbar , Teodora Vukovic , Sarah Ebling , Volker Dellwo

Infrared and visible video fusion plays a critical role in intelligent surveillance and low-light monitoring. However, maintaining temporal stability while preserving spatial detail remains a fundamental challenge. Existing methods either…

Computer Vision and Pattern Recognition · Computer Science 2026-04-03 Xilai Li , Chusheng Fang , Xiaosong Li

Dynamic mode decomposition (DMD) has become a powerful data-driven method for analyzing the spatiotemporal dynamics of complex, high-dimensional systems. However, conventional DMD methods are limited to matrix-based formulations, which…

Systems and Control · Electrical Eng. & Systems 2025-08-05 Ziqin He , Mengqi Hu , Yifei Lou , Can Chen

EEG-based emotion recognition holds significant potential in the field of brain-computer interfaces. A key challenge lies in extracting discriminative spatiotemporal features from electroencephalogram (EEG) signals. Existing studies often…

Human-Computer Interaction · Computer Science 2025-12-02 Xin Zhou , Dawei Huang , Xiaojing Peng , Lijun Yin

Dynamic facial expression recognition has many useful applications in social networks, multimedia content analysis, security systems and others. This challenging process must be done under recurrent problems of image illumination and low…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Ali Raza Shahid , Sheheryar Khan , Hong Yan

Space-time video super-resolution (STVSR) aims to increase the spatial and temporal resolutions of low-resolution and low-frame-rate videos. Recently, deformable convolution based methods have achieved promising STVSR performance, but they…

Computer Vision and Pattern Recognition · Computer Science 2021-05-03 Gang Xu , Jun Xu , Zhen Li , Liang Wang , Xing Sun , Ming-Ming Cheng

Dynamic Facial Expression Recognition (DFER) facilitates the understanding of psychological intentions through non-verbal communication. Existing methods struggle to manage irrelevant information, such as background noise and redundant…

Computer Vision and Pattern Recognition · Computer Science 2026-05-29 Meng-zhu Li , Quanxing Zha , Hongjun Wu

Video semantic segmentation aims to generate accurate semantic maps for each video frame. To this end, many works dedicate to integrate diverse information from consecutive frames to enhance the features for prediction, where a feature…

Computer Vision and Pattern Recognition · Computer Science 2023-01-11 Jiafan Zhuang , Zilei Wang , Junjie Li

Multimodal research is an emerging field of artificial intelligence, and one of the main research problems in this field is multimodal fusion. The fusion of multimodal data is the process of integrating multiple unimodal representations…

Artificial Intelligence · Computer Science 2018-06-04 Zhun Liu , Ying Shen , Varun Bharadhwaj Lakshminarasimhan , Paul Pu Liang , Amir Zadeh , Louis-Philippe Morency

Accurate recognition of human emotions is a crucial challenge in affective computing and human-robot interaction (HRI). Emotional states play a vital role in shaping behaviors, decisions, and social interactions. However, emotional…

Robotics · Computer Science 2024-09-19 Youssef Mohamed , Severin Lemaignan , Arzu Guneysu , Patric Jensfelt , Christian Smith

Micro-expressions are typically regarded as unconscious manifestations of a person's genuine emotions. However, their short duration and subtle signals pose significant challenges for downstream recognition. We propose a multi-task learning…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Xuxiong Liu , Tengteng Dong , Fei Wang , Weijie Feng , Xiao Sun

In the domain of human-computer interaction, accurately recognizing and interpreting human emotions is crucial yet challenging due to the complexity and subtlety of emotional expressions. This study explores the potential for detecting a…

Multimedia · Computer Science 2025-05-13 Jiehui Jia , Huan Zhang , Jinhua Liang

In-vehicle emotion recognition underpins adaptive driver-assistance systems and, ultimately, occupant safety. However, practical deployment is hindered by (i) modality fragility - poor lighting and occlusions degrade vision-based methods;…

Machine Learning · Computer Science 2025-07-23 Baran Can Gül , Suraksha Nadig , Stefanos Tziampazis , Nasser Jazdi , Michael Weyrich