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Millimeter-Wave (mmWave) radar enables camera-free gesture recognition for Internet of Things (IoT) interfaces, with robustness to lighting variations and partial occlusions. However, recent studies reveal that its data can inadvertently…

Human-Computer Interaction · Computer Science 2026-02-10 Ying Liu , Si Zuo , Chao Yang , Yuqing Song , Dariush Salami , Stephan Sigg

Monitoring sleep posture and behavior is critical for diagnosing sleep disorders and improving overall sleep quality. However, traditional approaches, such as wearable devices, cameras, and pressure sensors, often compromise user comfort,…

Human-Computer Interaction · Computer Science 2025-08-05 Agniva Banerjee , Bhanu Partap Paregi , Haroon R. Lone

In this paper, we present a unique $\text {2D}$ high resolution, compact, low-cost, lightweight, and highly accurate millimeter wave imagery system capable of operating in all weather conditions. We describe millimeter wave imaging process…

Signal Processing · Electrical Eng. & Systems 2025-08-18 Shahrokh Hamidi , M. R. Nezhad-Ahmadi

In the fast-paced field of human-computer interaction (HCI) and virtual reality (VR), automatic gesture recognition has become increasingly essential. This is particularly true for the recognition of hand signs, providing an intuitive way…

Computer Vision and Pattern Recognition · Computer Science 2024-02-21 Christian Schuessler , Wenxuan Zhang , Johanna Bräunig , Marcel Hoffmann , Michael Stelzig , Martin Vossiek

Radar technology presents untapped potential for continuous, contactless, and passive heart rate monitoring via consumer electronics like mobile phones. However the variety of available radar systems and lack of standardization means that a…

Human sensing is significantly improving our lifestyle in many fields such as elderly healthcare and public safety. Research has demonstrated that human activity can alter the passive radio frequency (PRF) spectrum, which represents the…

Human-Computer Interaction · Computer Science 2023-09-06 Huaizheng Mu , Liangqi Yuan , Jia Li

mmWave radar-based gait recognition is a novel user identification method that captures human gait biometrics from mmWave radar return signals. This technology offers privacy protection and is resilient to weather and lighting conditions.…

Computer Vision and Pattern Recognition · Computer Science 2023-05-09 Ekkasit Pinyoanuntapong , Ayman Ali , Kalvik Jakkala , Pu Wang , Minwoo Lee , Qucheng Peng , Chen Chen , Zhi Sun

In recent years, the amount of information collected about human beings has increased dramatically. This development has been partially driven by individuals posting and storing data about themselves and friends using online social networks…

Computers and Society · Computer Science 2014-03-24 Arkadiusz Stopczynski , Riccardo Pietri , Alex Pentland , David Lazer , Sune Lehmann

In industrial countries, adults spend a considerable amount of time sedentary each day at work, driving and during activities of daily living. Characterizing the seated upper body human poses using mmWave radars is an important, yet…

Computer Vision and Pattern Recognition · Computer Science 2024-07-03 Bo Zhang , Zimeng Zhou , Boyu Jiang , Rong Zheng

The paper proposes a novel feature extraction approach for FMCW radar systems in the field of short-range gesture sensing. A light-weight processing is proposed which reduces a series of 3D radar data cubes to four 1D time signals…

Signal Processing · Electrical Eng. & Systems 2021-11-23 Thomas Stadelmayer , Avik Santra , Robert Weigel , Fabian Lurz

Human activity recognition (HAR) is a rapidly growing field that utilizes smart devices, sensors, and algorithms to automatically classify and identify the actions of individuals within a given environment. These systems have a wide range…

4D millimeter-wave (mmWave) radars are increasingly used in robotics, as they offer robustness against adverse environmental conditions. Besides the usual XYZ position, they provide Doppler velocity measurements as well as Radar Cross…

Robotics · Computer Science 2026-04-17 Fernando Amodeo , Luis Merino , Fernando Caballero

Outdoor virtual reality (VR) places users in dynamic physical environments where they must remain aware of real-world obstacles, including static structures and moving bystanders, while immersed in a virtual scene. This dual demand…

Human-Computer Interaction · Computer Science 2026-02-03 Avinash Ajit Nargund , Andrew L. Huard , Tobias Höllerer , Misha Sra

Small Unmanned Aerial Vehicles (UAVs) are becoming potential threats to security-sensitive areas and personal privacy. A UAV can shoot photos at height, but how to detect such an uninvited intruder is an open problem. This paper presents…

Networking and Internet Architecture · Computer Science 2023-08-15 Jia Zhang , Xin Na , Rui Xi , Yimiao Sun , Yuan He

Human actions recognition is a fundamental task in artificial vision, that has earned a great importance in recent years due to its multiple applications in different areas. %, such as the study of human behavior, security or video…

Tracking interpersonal distances is essential for real-time social distancing management and {\em ex-post} contact tracing to prevent spreads of contagious diseases. Bluetooth neighbor discovery has been employed for such purposes in…

Networking and Internet Architecture · Computer Science 2023-03-24 Yimin Dai , Xian Shuai , Rui Tan , Guoliang Xing

In the last years, several machine learning-based techniques have been proposed to monitor human movements from Wi-Fi channel readings. However, the development of domain-adaptive algorithms that robustly work across different environments…

Signal Processing · Electrical Eng. & Systems 2024-08-27 Francesca Meneghello , Nicolò Dal Fabbro , Domenico Garlisi , Ilenia Tinnirello , Michele Rossi

This paper explores the use of ambient radio frequency (RF) signals for human presence detection through deep learning. Using WiFi signal as an example, we demonstrate that the channel state information (CSI) obtained at the receiver…

Machine Learning · Computer Science 2020-12-11 Yang Liu , Tiexing Wang , Yuexin Jiang , Biao Chen

In this article, we present a survey of recent advances in passive human behaviour recognition in indoor areas using the channel state information (CSI) of commercial WiFi systems. Movement of human body causes a change in the wireless…

Artificial Intelligence · Computer Science 2017-08-25 Siamak Yousefi , Hirokazu Narui , Sankalp Dayal , Stefano Ermon , Shahrokh Valaee

AI-generated video generation continues its journey through the uncanny valley to produce content that is increasingly perceptually indistinguishable from reality. To better protect individuals, organizations, and societies from its…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Matyas Bohacek , Hany Farid