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WiFi channel state information (CSI) has emerged as a plausible modality for sensing different human vital signs, i.e. respiration and body motion, as a function of modulated wireless signals that travel between WiFi devices. Although a…

Signal Processing · Electrical Eng. & Systems 2020-03-23 Kamran Ali , Mohammed Alloulah , Fahim Kawsar , Alex X. Liu

Gesture recognition is mainly apprehensive on analyzing the functionality of human wits. The main goal of gesture recognition is to create a system which can recognize specific human gestures and use them to convey information or for device…

Artificial Intelligence · Computer Science 2010-12-02 Harshith C , Karthik R. Shastry , Manoj Ravindran , M. V. V. N. S. Srikanth , Naveen Lakshmikhanth

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

Vision-based methods are commonly used in robotic arm activity recognition. These approaches typically rely on line-of-sight (LoS) and raise privacy concerns, particularly in smart home applications. Passive Wi-Fi sensing represents a new…

Robotics · Computer Science 2024-07-09 Rojin Zandi , Kian Behzad , Elaheh Motamedi , Hojjat Salehinejad , Milad Siami

Human pose estimation is fundamental to intelligent perception in the Internet of Things (IoT), enabling applications ranging from smart healthcare to human-computer interaction. While WiFi-based methods have gained traction, they often…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Yi Dao , Lankai Zhang , Hao Liu , Haiwei Zhang , Wenbo Wang

Wi-Fi sensing has been used to detect and track movements in an environment, resulting in the emergence of several innovative applications. Wi-Fi sensing can detect movement and locate objects by analyzing variations in the Wi-Fi signal due…

Networking and Internet Architecture · Computer Science 2024-06-04 Anirudha Sahoo , Tanguy Ropitault , Steve Blandino , Nada Golmie

The paper targets the problem of human motion detection using Wireless Local Area Network devices (WiFi) equipped with pattern reconfigurable antennas. Motion sensing is obtained by monitoring the body-induced alterations of the ambient…

Networking and Internet Architecture · Computer Science 2022-05-03 Marco Santoboni , Riccardo Bersan , Stefano Savazzi , Alberto Zecchin , Vittorio Rampa Daniele Piazza

Wireless signal-based gesture recognition has promoted the developments of VR game, smart home, etc. However, traditional approaches suffer from the influence of the domain gap. Low recognition accuracy occurs when the recognition model is…

Computer Vision and Pattern Recognition · Computer Science 2020-04-09 Jianwei Liu , Jinsong Han , Feng Lin , Kui Ren

We build CSI-Net, a unified Deep Neural Network~(DNN), to learn the representation of WiFi signals. Using CSI-Net, we jointly solved two body characterization problems: biometrics estimation (including body fat, muscle, water, and bone…

Machine Learning · Computer Science 2019-01-23 Fei Wang , Jinsong Han , Shiyuan Zhang , Xu He , Dong Huang

4D human perception plays an essential role in a myriad of applications, such as home automation and metaverse avatar simulation. However, existing solutions which mainly rely on cameras and wearable devices are either privacy intrusive or…

Signal Processing · Electrical Eng. & Systems 2023-09-26 Jianfei Yang , He Huang , Yunjiao Zhou , Xinyan Chen , Yuecong Xu , Shenghai Yuan , Han Zou , Chris Xiaoxuan Lu , Lihua Xie

Wi-Fi sensing leveraging plain-text beamforming feedback information (BFI) in multiple-input-multiple-output (MIMO) systems attracts increasing attention. However, due to the implicit relationship between BFI and the channel state…

Signal Processing · Electrical Eng. & Systems 2024-06-11 Xin Li , Jingzhi Hu , Jun Luo

Using physical interactive devices like mouse and keyboards hinders naturalistic human-machine interaction and increases the probability of surface contact during a pandemic. Existing gesture-recognition systems do not possess user…

Human-Computer Interaction · Computer Science 2022-09-08 Ankit Jha , Ishita , Pratham G. Shenwai , Ayush Batra , Siddharth Kotian , Piyush Modi

The first step of a secure communication is authenticating legible users and detecting the malicious ones. In the last recent years, some promising schemes proposed using wireless medium network's features, in particular, channel state…

Networking and Internet Architecture · Computer Science 2018-12-18 Amirhossein Yazdani Abyaneh , Ali Hosein Gharari Foumani , Vahid Pourahmadi

Many recent works have explored using WiFi-based sensing to improve SLAM, robot manipulation, or exploration. Moreover, widespread availability makes WiFi the most advantageous RF signal to leverage. But WiFi sensors lack an accurate,…

Robotics · Computer Science 2023-05-24 William Hunter , Aditya Arun , Dinesh Bharadia

RF fingerprinting leverages circuit-level variability of transmitters to identify them using signals they send. Signals used for identification are impacted by a wireless channel and receiver circuitry, creating additional impairments that…

Signal Processing · Electrical Eng. & Systems 2022-01-13 Samer Hanna , Samurdhi Karunaratne , Danijela Cabric

In this work, we propose a gesture based language to allow humans to interact with robots using their body in a natural way. We have created a new gesture detection model using neural networks and a custom dataset of humans performing a set…

Robotics · Computer Science 2022-06-16 Javier Laplaza , Joan Jaume Oliver , Ramón Romero , Alberto Sanfeliu , Anaís Garrell

WiFi Channel State Information (CSI)-based human activity recognition (HAR) enables contactless, long-range sensing in spatially constrained environments while preserving visual privacy. However, despite the presence of numerous…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Julian Strohmayer , Martin Kampel

In recent years WiFi became the primary source of information to locate a person or device indoor. Collecting RSSI values as reference measurements with known positions, known as WiFi fingerprinting, is commonly used in various positioning…

Machine Learning · Computer Science 2023-07-18 Kahraman Kostas , Rabia Yasa Kostas , Francisco Zampella , Firas Alsehly

Person re-identification (ReID), as a crucial technology in the field of security, plays an important role in security detection and people counting. Current security and monitoring systems largely rely on visual information, which may…

Information Retrieval · Computer Science 2024-07-15 Chen Mao , Chong Tan , Jingqi Hu , Min Zheng

Wearable sensor devices, which offer the advantage of recording daily objects used by a person while performing an activity, enable the feasibility of unsupervised Human Activity Recognition (HAR). Unfortunately, previous unsupervised…

Human-Computer Interaction · Computer Science 2023-06-12 Qingxin Xia , Takuya Maekawa , Takahiro Hara