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In recent years, deep learning has emerged as a potent tool across a multitude of domains, leading to a surge in research pertaining to its application in the wearable human activity recognition (WHAR) domain. Despite the rapid development,…

Machine Learning · Computer Science 2024-01-12 Yiran Huang , Haibin Zhao , Yexu Zhou , Till Riedel , Michael Beigl

Human action recognition still exists many challenging problems such as different viewpoints, occlusion, lighting conditions, human body size and the speed of action execution, although it has been widely used in different areas. To tackle…

Computer Vision and Pattern Recognition · Computer Science 2024-06-10 Lei Wang

Deep-learning based computer vision models have proved themselves to be ground-breaking approaches to human activity recognition (HAR). However, most existing works are dedicated to improve the prediction accuracy through either creating…

Computer Vision and Pattern Recognition · Computer Science 2021-02-04 Mahsun Altın , Furkan Gürsoy , Lina Xu

Human Activity Recognition (HAR) is the identification and classification of static and dynamic human activities, which find applicability in domains like healthcare, entertainment, security, and cyber-physical systems. Traditional HAR…

Signal Processing · Electrical Eng. & Systems 2025-01-27 Nuno Paulino , Mariana Oliveira , Francisco Ribeiro , Luís Outeiro , Pedro A. Lopes , Francisco Vilarinho , Sofia Inácio , Luís M. Pessoa

This project investigates the human multi-modal behavior identification algorithm utilizing deep neural networks. According to the characteristics of different modal information, different deep neural networks are used to adapt to different…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Jinyin Wang , Xingchen Li , Yixuan Jin , Yihao Zhong , Keke Zhang , Chang Zhou

Derived from rapid advances in computer vision and machine learning, video analysis tasks have been moving from inferring the present state to predicting the future state. Vision-based action recognition and prediction from videos are such…

Computer Vision and Pattern Recognition · Computer Science 2022-02-15 Yu Kong , Yun Fu

Human activity recognition~(HAR) has attracted significant research interest due to its applications in health monitoring and patient rehabilitation. Recent research on HAR focuses on using smartphones due to their widespread use. However,…

Computer Vision and Pattern Recognition · Computer Science 2019-02-06 Ganapati Bhat , Ranadeep Deb , Vatika Vardhan Chaurasia , Holly Shill , Umit Y. Ogras

Human activity recognition (HAR) is a time series classification task that focuses on identifying the motion patterns from human sensor readings. Adequate data is essential but a major bottleneck for training a generalizable HAR model,…

Computer Vision and Pattern Recognition · Computer Science 2023-06-12 Xin Qin , Jindong Wang , Shuo Ma , Wang Lu , Yongchun Zhu , Xing Xie , Yiqiang Chen

Radar-based human activity recognition has gained attention as a privacy-preserving alternative to vision and wearable sensors, especially in sensitive environments like long-term care facilities. Micro-Doppler spectrograms derived from…

Image and Video Processing · Electrical Eng. & Systems 2026-02-25 Huy Trinh , Davis Liu , Munia Humaira , Peter Lee , Zhou Wang

Multimodal human action recognition (HAR) leverages complementary sensors for activity classification. Beyond recognition, recent advances in large language models (LLMs) enable detailed descriptions and causal reasoning, motivating new…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Siyang Jiang , Mu Yuan , Xiang Ji , Bufang Yang , Zeyu Liu , Lilin Xu , Yang Li , Yuting He , Liran Dong , Wenrui Lu , Zhenyu Yan , Xiaofan Jiang , Wei Gao , Hongkai Chen , Guoliang Xing

Activity recognition systems that are capable of estimating human activities from wearable inertial sensors have come a long way in the past decades. Not only have state-of-the-art methods moved away from feature engineering and have fully…

Human-Computer Interaction · Computer Science 2021-10-14 Marius Bock , Alexander Hoelzemann , Michael Moeller , Kristof Van Laerhoven

Human Activity Recognition (HAR) has recently received remarkable attention in numerous applications such as assisted living and remote monitoring. Existing solutions based on sensors and vision technologies have obtained achievements but…

Computer Vision and Pattern Recognition · Computer Science 2022-05-25 Yanling Hao , Zhiyuan Shi , Yuanwei Liu

Radio-frequency (RF)-based human activity recognition (HAR) provides a contactless and privacy-preserving solution for monitoring human behavior in applications such as astronaut extravehicular activity monitoring, human-autonomy…

Signal Processing · Electrical Eng. & Systems 2025-08-07 Junshuo Liu , Xin Shi , Yunchuan Zhang , Yinhao Ge , Robert C. Qiu

Currently, video behavior recognition is one of the most foundational tasks of computer vision. The 2D neural networks of deep learning are built for recognizing pixel-level information such as images with RGB, RGB-D, or optical flow…

Computer Vision and Pattern Recognition · Computer Science 2023-05-26 Zihan Wang , Yang Yang , Zhi Liu , Yifan Zheng

Human action recognition (HAR) in videos has garnered widespread attention due to the rich information in RGB videos. Nevertheless, existing methods for extracting deep features from RGB videos face challenges such as information…

Computer Vision and Pattern Recognition · Computer Science 2025-12-04 Mengyuan Liu , Jinfu Liu , Yongkang Jiang , Bin He

Human action recognition refers to automatic recognizing human actions from a video clip. In reality, there often exist multiple human actions in a video stream. Such a video stream is often weakly-annotated with a set of relevant human…

Computer Vision and Pattern Recognition · Computer Science 2019-02-07 Qian Wang , Ke Chen

To properly assist humans in their needs, human activity recognition (HAR) systems need the ability to fuse information from multiple modalities. Our hypothesis is that multimodal sensors, visual and non-visual tend to provide complementary…

Computer Vision and Pattern Recognition · Computer Science 2022-11-09 Hyeongju Choi , Apoorva Beedu , Harish Haresamudram , Irfan Essa

Recently, deep learning has represented an important research trend in human activity recognition (HAR). In particular, deep convolutional neural networks (CNNs) have achieved state-of-the-art performance on various HAR datasets. For deep…

Computer Vision and Pattern Recognition · Computer Science 2020-06-16 Xin Cheng , Lei Zhang , Yin Tang , Yue Liu , Hao Wu , Jun He

The paper provides a survey of the development of machine-learning techniques for video analysis. The survey provides a summary of the most popular deep learning methods used for human activity recognition. We discuss how popular…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Marios S. Pattichis , Venkatesh Jatla , Alvaro E. Ullao Cerna

The research on human activity recognition has provided novel solutions to many applications like healthcare, sports, and user profiling. Considering the complex nature of human activities, it is still challenging even after effective and…

Human-Computer Interaction · Computer Science 2023-07-11 Ranjit Kolkar , Geetha V