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Human Action Recognition (HAR), one of the most important tasks in computer vision, has developed rapidly in the past decade and has a wide range of applications in health monitoring, intelligent surveillance, virtual reality, human…

Computer Vision and Pattern Recognition · Computer Science 2023-01-18 Zhou Shuchang

Human activity recognition (HAR) using machine learning has shown tremendous promise in detecting construction workers' activities. HAR has many applications in human-robot interaction research to enable robots' understanding of human…

Robotics · Computer Science 2023-08-30 Farid Shahnavaz , Riley Tavassoli , Reza Akhavian

The problem of automatic identification of physical activities performed by human subjects is referred to as Human Activity Recognition (HAR). There exist several techniques to measure motion characteristics during these physical…

Machine Learning · Computer Science 2019-06-06 Antonio Bevilacqua , Kyle MacDonald , Aamina Rangarej , Venessa Widjaya , Brian Caulfield , Tahar Kechadi

Wi-Fi-based human activity recognition (HAR) has emerged as a promising approach for contactless sensing, leveraging channel state information (CSI) collected from wireless transceivers. While existing studies have primarily concentrated on…

Signal Processing · Electrical Eng. & Systems 2026-05-21 Amirhossein Mohammadi , Hina Tabassum

Human Activity Recognition (HAR) is a crucial technology for many applications such as smart homes, surveillance, human assistance and health care. This technology utilises pattern recognition and can contribute to the development of…

Human-Computer Interaction · Computer Science 2022-06-10 Farhad Nazari , Darius Nahavandi , Navid Mohajer , Abbas Khosravi

Wi-Fi-based human activity recognition (HAR) provides substantial convenience and has emerged as a thriving research field, yet the coarse spatial resolution inherent to Wi-Fi significantly hinders its ability to distinguish multiple…

Signal Processing · Electrical Eng. & Systems 2025-10-22 Xin Li , Jingzhi Hu , Yinghui He , Hongbo Wang , Jin Gan , Jun Luo

Human activity recognition (HAR) with wearables is one of the serviceable technologies in ubiquitous and mobile computing applications. The sliding-window scheme is widely adopted while suffering from the multi-class windows problem. As a…

Computer Vision and Pattern Recognition · Computer Science 2023-10-16 Songpengcheng Xia , Lei Chu , Ling Pei , Jiarui Yang , Wenxian Yu , Robert C. Qiu

In the realm of smart sensing with the Internet of Things, earable devices are empowered with the capability of multi-modality sensing and intelligence of context-aware computing, leading to its wide usage in Human Activity Recognition…

Signal Processing · Electrical Eng. & Systems 2024-06-26 Shengzhe Lyu , Yongliang Chen , Di Duan , Renqi Jia , Weitao Xu

The high cost of annotating data makes self-supervised approaches, such as contrastive learning methods, appealing for Human Activity Recognition (HAR). Effective contrastive learning relies on selecting informative positive and negative…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Yavuz Yarici , Kiran Kokilepersaud , Mohit Prabhushankar , Ghassan AlRegib

A major barrier to the personalized Human Activity Recognition using wearable sensors is that the performance of the recognition model drops significantly upon adoption of the system by new users or changes in physical/ behavioral status of…

Computer Vision and Pattern Recognition · Computer Science 2018-01-26 Seyed Ali Rokni , Marjan Nourollahi , Hassan Ghasemzadeh

Despite the vast literature on Human Activity Recognition (HAR) with wearable inertial sensor data, it is perhaps surprising that there are few studies investigating semisupervised learning for HAR, particularly in a challenging scenario…

Machine Learning · Computer Science 2021-01-14 Govind Narasimman , Kangkang Lu , Arun Raja , Chuan Sheng Foo , Mohamed Sabry Aly , Jie Lin , Vijay Chandrasekhar

Human Activity Recognition (HAR) has become increasingly popular with ubiquitous computing, driven by the popularity of wearable sensors in fields like healthcare and sports. While Convolutional Neural Networks (ConvNets) have significantly…

Signal Processing · Electrical Eng. & Systems 2024-05-31 Shuai Shao , Yu Guan , Victor Sanchez

Human Action Recognition (HAR) is a challenging domain in computer vision, involving recognizing complex patterns by analyzing the spatiotemporal dynamics of individuals' movements in videos. These patterns arise in sequential data, such as…

Computer Vision and Pattern Recognition · Computer Science 2025-01-23 Ali K. AlShami , Ryan Rabinowitz , Khang Lam , Yousra Shleibik , Melkamu Mersha , Terrance Boult , Jugal Kalita

Cross-modal contrastive pre-training between natural language and other modalities, e.g., vision and audio, has demonstrated astonishing performance and effectiveness across a diverse variety of tasks and domains. In this paper, we…

Machine Learning · Computer Science 2024-08-23 Harish Haresamudram , Apoorva Beedu , Mashfiqui Rabbi , Sankalita Saha , Irfan Essa , Thomas Ploetz

Human activity recognition (HAR) has become a popular topic in research because of its wide application. With the development of deep learning, new ideas have appeared to address HAR problems. Here, a deep network architecture using…

Computer Vision and Pattern Recognition · Computer Science 2017-09-08 Yu Zhao , Rennong Yang , Guillaume Chevalier , Maoguo Gong

Human Activity Recognition (HAR) involves the automatic identification of user activities and has gained significant research interest due to its broad applicability. Most HAR systems rely on supervised learning, which necessitates large,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Xian Gao , Haoyue Zhang , Zongyun Zhang , Jiacheng Ruan , Ting Liu , Yuzhuo Fu

Multimodal fusion frameworks for Human Action Recognition (HAR) using depth and inertial sensor data have been proposed over the years. In most of the existing works, fusion is performed at a single level (feature level or decision level),…

Machine Learning · Computer Science 2019-10-28 Zeeshan Ahmad , Naimul Khan

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

Humans naturally follow distinct patterns when conducting their daily activities, which are driven by established practices and processes, such as production workflows, social norms and daily routines. Human activity recognition (HAR)…

Artificial Intelligence · Computer Science 2024-11-14 Jiawei Zheng , Petros Papapanagiotou , Jacques D. Fleuriot , Jane Hillston

Human Activity Recognition (HAR) has recently witnessed advancements with Transformer-based models. Especially, ActionFormer shows us a new perspectives for HAR in the sense that this approach gives us additional outputs which detect the…

Machine Learning · Computer Science 2025-05-28 Kunpeng Zhao , Asahi Miyazaki , Tsuyoshi Okita