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Existing activity tracker datasets for human activity recognition are typically obtained by having participants perform predefined activities in an enclosed environment under supervision. This results in small datasets with a limited number…

Human-Computer Interaction · Computer Science 2024-03-01 Shing Chan , Hang Yuan , Catherine Tong , Aidan Acquah , Abram Schonfeldt , Jonathan Gershuny , Aiden Doherty

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

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

As a critical component of Wearable AI, IMU-based Human Activity Recognition (HAR) has attracted increasing attention from both academia and industry in recent years. Although HAR performance has improved considerably in specific scenarios,…

Signal Processing · Electrical Eng. & Systems 2025-08-19 Yize Cai , Baoshen Guo , Flora Salim , Zhiqing Hong

Several techniques have been proposed to address the problem of recognizing activities of daily living from signals. Deep learning techniques applied to inertial signals have proven to be effective, achieving significant classification…

Signal Processing · Electrical Eng. & Systems 2022-01-21 Hamza Amrani , Daniela Micucci , Marco Mobilio , Paolo Napoletano

Understanding the complexity of human activities solely through an individual's data can be challenging. However, in many situations, surrounding individuals are likely performing similar activities, while existing human activity…

Computer Vision and Pattern Recognition · Computer Science 2023-06-12 Haoxiang Yu , Jingyi An , Evan King , Edison Thomaz , Christine Julien

Deploying human activity recognition (HAR) at home is still rare because sensor signals vary wildly across houses, people, and time, essentially requiring in-situ data collection and training. Prior approaches use cameras to generate…

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

In smart healthcare, Human Activity Recognition (HAR) is considered to be an efficient model in pervasive computation from sensor readings. The Ambient Assisted Living (AAL) in the home or community helps the people in providing independent…

Machine Learning · Computer Science 2021-11-22 Pankaj Khatiwada , Ayan Chatterjee , Matrika Subedi

Human Activity Recognition (HAR) using deep neural network has become a hot topic in human-computer interaction. Machine can effectively identify human naturalistic activities by learning from a large collection of sensor data. Activity…

Computer Vision and Pattern Recognition · Computer Science 2019-06-12 Jun Long , WuQing Sun , Zhan Yang , Osolo Ian Raymond

While the task of automatically detecting eating events has been examined in prior work using various wearable devices, the use of smartphones as standalone devices to infer eating events remains an open issue. This paper proposes a…

Human-Computer Interaction · Computer Science 2022-06-01 Wageesha Bangamuarachchi , Anju Chamantha , Lakmal Meegahapola , Salvador Ruiz-Correa , Indika Perera , Daniel Gatica-Perez

Smartphones and smartwatches are ever-present in daily life, and provide a rich source of information on their users' behaviour. In particular, digital traces derived from the phone's embedded movement sensors present an opportunity for a…

Machine Learning · Computer Science 2025-12-04 Conor McCarthy , Jan Peter van Zandwijk , Marcel Worring , Zeno Geradts

Human activity recognition (HAR) is a very active research field. Recently, deep learning techniques are being exploited to recognize human activities from inertial signals. However, to compute accurate and reliable deep learning models, a…

Computers and Society · Computer Science 2019-05-30 Anna Ferrari , Daniela Micucci , Marco Mobilio , Paolo Napoletano

The main streams of human activity recognition (HAR) algorithms are developed based on RGB cameras which are suffered from illumination, fast motion, privacy-preserving, and large energy consumption. Meanwhile, the biologically inspired…

Computer Vision and Pattern Recognition · Computer Science 2022-11-18 Xiao Wang , Zongzhen Wu , Bo Jiang , Zhimin Bao , Lin Zhu , Guoqi Li , Yaowei Wang , Yonghong Tian

Current studies in Human Activity Recognition (HAR) primarily focus on the classification of activities through sensor data, while there is not much emphasis placed on recognizing the individuals performing these activities. This type of…

Machine Learning · Computer Science 2025-05-13 Debashish Saha , Piyush Malik , Adrika Saha

This paper presents a 3-step system that estimates the real-time energy expenditure of an individual in a non-intrusive way. First, using the user's smart-phone's sensors, we build a Decision Tree model to recognize his physical activity…

Computers and Society · Computer Science 2020-09-09 Maxime De Bois , Hamdi Amroun , Mehdi Ammi

Human activity recognition (HAR) holds immense potential for transforming health and fitness monitoring, yet challenges persist in achieving personalized outcomes and sustainability for on-device continuous inferences. This work introduces…

Signal Processing · Electrical Eng. & Systems 2024-09-04 Bidyut Saha , Riya Samanta , Soumya K Ghosh , Ram Babu Roy

Existing work in human activity detection classifies physical activities using a single fixed-length subset of a sensor signal. However, temporally consecutive subsets of a sensor signal are not utilized. This is not optimal for classifying…

Neural and Evolutionary Computing · Computer Science 2018-12-06 Niko Reunanen , Ville Könönen , Hermanni Hälvä , Jani Mäntyjärvi , Arttu Lämsä , Jussi Liikka

Human Activity Recognition (HAR) on mobile devices has been demonstrated to be possible using neural models trained on data collected from the device's inertial measurement units. These models have used Convolutional Neural Networks (CNNs),…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Sannara EK , François Portet , Philippe Lalanda

Accurately recognizing human context from smartphone sensor data remains a significant challenge, especially in sedentary settings where activities such as studying, attending lectures, relaxing, and eating exhibit highly similar inertial…

Signal Processing · Electrical Eng. & Systems 2025-12-03 Aditya Sneh , Nilesh Kumar Sahu , Snehil Gupta , Haroon R. Lone