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Vertical localization, particularly floor separation, remains a major challenge in indoor positioning systems operating in GPS-denied multistory environments. This paper proposes a fully data-driven, graph-based framework for blind floor…

Networking and Internet Architecture · Computer Science 2026-02-03 Rabia Yasa Kostas , Kahraman Kostas

Due to the indoor none-line-of-sight (NLoS) propagation and multi-access interference (MAI), it is a great challenge to achieve centimeter-level positioning accuracy in indoor scenarios. However, the sixth generation (6G) wireless…

Signal Processing · Electrical Eng. & Systems 2022-08-23 Yang Wu , Yinghua Wang , Jie Huang , Cheng-Xiang Wang , Chen Huang

Fingerprinting large language models (LLMs) is essential for verifying model ownership, ensuring authenticity, and preventing misuse. Traditional fingerprinting methods often require significant computational overhead or white-box…

Cryptography and Security · Computer Science 2025-07-15 Jiacheng Cai , Jiahao Yu , Yangguang Shao , Yuhang Wu

WiFi-based localization became one of the main indoor localization techniques due to the ubiquity of WiFi connectivity. However, indoor environments exhibit complex wireless propagation characteristics. Typically, these characteristics are…

Networking and Internet Architecture · Computer Science 2015-08-04 Heba Aly , Moustafa Youssef

WiFi-based mobility monitoring in urban environments can provide valuable insights into pedestrian and vehicle movements. However, MAC address randomization introduces a significant obstacle in accurately estimating congestion levels and…

Signal Processing · Electrical Eng. & Systems 2025-03-05 Stepan Mazokha , Fanchen Bao , George Sklivanitis , Jason O. Hallstrom

We introduce a method for automated temporal segmentation of human motion data into distinct actions and compositing motion primitives based on self-similar structures in the motion sequence. We use neighbourhood graphs for the partitioning…

Computer Vision and Pattern Recognition · Computer Science 2021-12-07 Björn Krüger , Anna Vögele , Tobias Willig , Angela Yao , Reinhard Klein , Andreas Weber

In this paper we propose a novel fingerprint indexing approach for speeding up in the fingerprint recognition system. What kind of features are used for indexing and how to employ the extracted features for searching are crucial for the…

Computer Vision and Pattern Recognition · Computer Science 2018-11-22 Gwang-Il Ri , Chol-Gyun Ri , Su-Rim Ji

In trying to build humanoid robots that perform useful tasks in a world built for humans, we address the problem of autonomous locomotion. Humanoid robot planning and control algorithms for walking over rough terrain are becoming…

Accurate and robust indoor localization is critical for smart building applications, yet existing Wi-Fi-based systems are often vulnerable to environmental conditions. This work presents a novel indoor localization system, called LiGen,…

Robotics · Computer Science 2025-10-31 Jie Lin , Hsun-Yu Lee , Ho-Ming Li , Fang-Jing Wu

Indoor localization is one of the crucial enablers for deployment of service robots. Although several successful techniques for indoor localization have been proposed, the majority of them relies on maps generated from data gathered with…

Robotics · Computer Science 2019-07-15 Federico Boniardi , Abhinav Valada , Rohit Mohan , Tim Caselitz , Wolfram Burgard

LiDAR-based localization and mapping is one of the core components in many modern robotic systems due to the direct integration of range and geometry, allowing for precise motion estimation and generation of high quality maps in real-time.…

Robotics · Computer Science 2022-08-02 Julian Nubert , Etienne Walther , Shehryar Khattak , Marco Hutter

WLAN Device-free passive DfP indoor localization is an emerging technology enabling the localization of entities that do not carry any devices nor participate actively in the localization process using the already installed wireless…

Networking and Internet Architecture · Computer Science 2012-02-14 Ahmed E. Kosba , Ahmed Saeed , Moustafa Youssef

The emerging ``Floor plan from human trails (PfH)" technique has great potential for improving indoor robot navigation by predicting the traversability of occluded floors. This study presents an innovative approach that replaces…

Robotics · Computer Science 2023-10-03 Jonathan Tay Yu Liang , Kanji Tanaka

We address the indoor localization problem, where the goal is to predict user's trajectory from the data collected by their smartphone, using inertial sensors such as accelerometer, gyroscope and magnetometer, as well as other environment…

Machine Learning · Computer Science 2020-11-24 Leonid Antsfeld , Boris Chidlovskii , Emilio Sansano-Sansano

This paper investigates the utility of Neural Radiance Fields (NeRF) models in extending the regions of operation of a mobile robot, controlled by Image-Based Visual Servoing (IBVS) via static CCTV cameras. Using NeRF as a 3D-representation…

Robotics · Computer Science 2024-10-04 Daoxin Zhong , Luke Robinson , Daniele De Martini

To increase the speed of operation and reduce operator burden, humanoid robots must be able to function autonomously, even in complex, cluttered environments. For this to be possible, they must be able to quickly and efficiently compute…

Robotics · Computer Science 2019-07-23 Robert J. Griffin , Georg Wiedebach , Stephen McCrory , Sylvain Bertrand , Inho Lee , Jerry Pratt

The analysis of patterns of walking is an important area of research that has numerous applications in security, healthcare, sports and human-computer interaction. Lately, walking patterns have been regarded as a unique fingerprinting…

Computer Vision and Pattern Recognition · Computer Science 2024-01-25 Andy Catruna , Adrian Cosma , Emilian Radoi

Modern smartphones contain motion sensors, such as accelerometers and gyroscopes. These sensors have many useful applications; however, they can also be used to uniquely identify a phone by measuring anomalies in the signals, which are a…

Cryptography and Security · Computer Science 2015-03-09 Anupam Das , Nikita Borisov , Matthew Caesar

Fingerprint-based localization improves the positioning performance in challenging, non-line-of-sight (NLoS) dominated indoor environments. However, fingerprinting models require an expensive life-cycle management including recording and…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Maximilian Stahlke , George Yammine , Tobias Feigl , Bjoern M. Eskofier , Christopher Mutschler

Due to its high delay resolution, the ultra-wideband (UWB) technique has been widely adopted for fine-grained indoor localization. Instead of active positioning, UWB radar-based passive human tracking is explored using commercial…

Signal Processing · Electrical Eng. & Systems 2022-04-20 Chenglong Li , Emmeric Tanghe , Jaron Fontaine , Luc Martens , Jac Romme , Gaurav Singh , Eli De Poorter , Wout Joseph