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This paper examines the application of WiFi signals for real-world monitoring of daily activities in home healthcare scenarios. While the state-of-the-art of WiFi-based activity recognition is promising in lab environments, challenges arise…

While fulfilling communication tasks, wireless signals can also be used to sense the environment. Among various types of sensing media, WiFi signals offer advantages such as widespread availability, low hardware cost, and strong robustness…

计算机视觉与模式识别 · 计算机科学 2025-12-05 Ruijing Liu , Cunhua Pan , Jiaming Zeng , Hong Ren , Kezhi Wang , Lei Kong , Jiangzhou Wang

Recent trends have accelerated the development of spatial applications on mobile devices and robots. These include navigation, augmented reality, human-robot interaction, and others. A key enabling technology for such applications is the…

机器人学 · 计算机科学 2020-02-19 Zakieh S. Hashemifar , Charuvahan Adhivarahan , Anand Balakrishnan , Karthik Dantu

Data augmentation is a critical component of training deep learning models. Although data augmentation has been shown to significantly improve image classification, its potential has not been thoroughly investigated for object detection.…

计算机视觉与模式识别 · 计算机科学 2019-06-27 Barret Zoph , Ekin D. Cubuk , Golnaz Ghiasi , Tsung-Yi Lin , Jonathon Shlens , Quoc V. Le

Recently, Wi-Fi has caught tremendous attention for its ubiquity, and, motivated by Wi-Fi's low cost and privacy preservation, researchers have been putting lots of investigation into its potential on action recognition and even person…

计算机视觉与模式识别 · 计算机科学 2017-04-04 Jen-Yin Chang , Kuan-Ying Lee , Yu-Lin Wei , Kate Ching-Ju Lin , Winston Hsu

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…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Julian Strohmayer , Martin Kampel

Accurate detection of human presence in indoor environments is important for various applications, such as energy management and security. In this paper, we propose a novel system for human presence detection using the channel state…

机器学习 · 计算机科学 2024-02-09 Li-Hsiang Shen , An-Hung Hsiao , Kuan-I Lu , Kai-Ten Feng

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…

机器人学 · 计算机科学 2024-07-09 Rojin Zandi , Kian Behzad , Elaheh Motamedi , Hojjat Salehinejad , Milad Siami

Data augmentation has been widely applied as an effective methodology to improve generalization in particular when training deep neural networks. Recently, researchers proposed a few intensive data augmentation techniques, which indeed…

机器学习 · 计算机科学 2019-11-22 Zhuoxun He , Lingxi Xie , Xin Chen , Ya Zhang , Yanfeng Wang , Qi Tian

In recent years, Joint Communication and Sensing (JC&S), has demonstrated significant success, particularly in utilizing sub-6 GHz frequencies with commercial-off-the-shelf (COTS) Wi-Fi devices for applications such as localization, gesture…

计算机视觉与模式识别 · 计算机科学 2024-07-01 Nabeel Nisar Bhat , Rafael Berkvens , Jeroen Famaey

With the increasing need for wireless data transfer, Wi-Fi networks have rapidly grown in recent years providing high throughput and easy deployment. Nowadays, Access Points (APs) can be found easily wherever we go, therefore Wi-Fi sensing…

信号处理 · 电气工程与系统科学 2019-11-13 Danilo Avola , Marco Cascio , Luigi Cinque , Daniele Pannone

WiFi sensing technology has shown superiority in smart homes among various sensors for its cost-effective and privacy-preserving merits. It is empowered by Channel State Information (CSI) extracted from WiFi signals and advanced machine…

网络与互联网体系结构 · 计算机科学 2022-12-13 Jianfei Yang , Xinyan Chen , Han Zou , Dazhuo Wang , Lihua Xie

We propose a WiFi Channel State Information (CSI) sensing framework for multi-station deployments that addresses two fundamental challenges in practical CSI sensing: station-wise feature missingness and limited labeled data. Feature…

机器学习 · 计算机科学 2026-03-25 Keita Kayano , Takayuki Nishio , Daiki Yoda , Yuta Hirai , Tomoko Adachi

Deep neural networks (DNNs) have become a popular approach for wireless localization based on channel state information (CSI). A common practice is to use the raw CSI in the input and allow the network to learn relevant channel…

信号处理 · 电气工程与系统科学 2022-12-07 Artan Salihu , Stefan Schwarz , Markus Rupp

WiFi-based human activity recognition (HAR) holds significant application potential across various fields. To handle dynamic environments where new activities are continuously introduced, WiFi-based HAR systems must adapt by learning new…

信号处理 · 电气工程与系统科学 2025-02-26 Rong Li , Tao Deng , Siwei Feng , Mingjie Sun , Juncheng Jia

This study aims to find the upper limit of the wireless sensing capability of acquiring physical space information. This is a challenging objective, because at present, wireless sensing studies continue to succeed in acquiring novel…

Machine learning models trained with purely observational data and the principle of empirical risk minimization \citep{vapnik_principles_1992} can fail to generalize to unseen domains. In this paper, we focus on the case where the problem…

机器学习 · 统计学 2020-10-27 Maximilian Ilse , Jakub M. Tomczak , Patrick Forré

Human activity recognition (HAR) has been playing an increasingly important role in various domains such as healthcare, security monitoring, and metaverse gaming. Though numerous HAR methods based on computer vision have been developed to…

计算机视觉与模式识别 · 计算机科学 2024-03-01 Jianfei Yang , Shijie Tang , Yuecong Xu , Yunjiao Zhou , Lihua Xie

With the IEEE 802.11bf Task Group introducing amendments to the WLAN standard for advanced sensing, interest in using Wi-Fi Channel State Information (CSI) for remote sensing has surged. Recent findings indicate that learning a unified…

信号处理 · 电气工程与系统科学 2025-09-19 Navid Hasanzadeh , Shahrokh Valaee

This paper presents a novel hybrid deep learning framework designed to enhance the robustness of CSI-based Human Activity Recognition (HAR) within bandwidth-constrained Wi-Fi sensing environments. The core of our proposed methodology is a…

信号处理 · 电气工程与系统科学 2026-02-10 Alison M. Fernandes , Hermes I. Del Monego , Bruno S. Chang , Anelise Munaretto , Hélder M. Fontes , Rui Campos