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In the context of single-base station (BS) non-line-of-sight (NLoS) single-epoch localization with the aid of a reflective reconfigurable intelligent surface (RIS), this paper introduces a novel three-step algorithm that jointly estimates…

Signal Processing · Electrical Eng. & Systems 2025-09-08 Moustafa Rahal , Benoit Denis , Musa Furkan Keskin , Bernard Uguen , Henk Wymeersch

In this paper we use the MAP criterion to locate a region containing a source. Sensors placed in a field of interest divide the latter into smaller regions and take measurements that are transmitted over noisy wireless channels. We propose…

Optimization and Control · Mathematics 2009-03-19 S. H. Dandach , F. Bullo

Significance: Compressed sensing (CS) uses special measurement designs combined with powerful mathematical algorithms to reduce the amount of data to be collected while maintaining image quality. This is relevant to almost any imaging…

Computer Vision and Pattern Recognition · Computer Science 2024-02-27 Markus Haltmeier , Matthias Ye , Karoline Felbermayer , Florian Hinterleitner , Peter Burgholzer

Accurate camera pose estimation is a fundamental requirement for numerous applications, such as autonomous driving, mobile robotics, and augmented reality. In this work, we address the problem of estimating the global 6 DoF camera pose from…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Mohammad Altillawi

Place recognition plays a crucial role in re-localization and loop closure detection tasks for robots and vehicles. This paper seeks a well-defined global descriptor for LiDAR-based place recognition. Compared to local descriptors, global…

Robotics · Computer Science 2022-09-28 Yongzhi Fan , Xin Du , Lun Luo , Jizhong Shen

Wi-Fi-based positioning promises a scalable and privacy-preserving solution for location-based services in indoor environments such as malls, airports, and campuses. RSS-based methods are widely deployable as RSS data is available on all…

Signal Processing · Electrical Eng. & Systems 2025-09-30 Abdulkadir Bilge , Erdem Ergen , Burak Soner , Sinem Coleri

A staircase localization method is proposed for robots to explore urban environments autonomously. The proposed method employs a modular design in the form of a cascade pipeline consisting of three modules of stair detection, line segment…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Jinrae Kim , Sunggoo Jung , Sung-Kyun Kim , Youdan Kim , Ali-akbar Agha-mohammadi

Based on various existing wireless fingerprint location algorithms in intelligent sports venues, a high-precision and fast indoor location algorithm improved weighted k-nearest neighbor (I-WKNN) is proposed. In order to meet the complex…

Machine Learning · Computer Science 2022-01-11 Zhangzhi Zhao , Zhengying Lou , Ruibo Wang , Qingyao Li , Xing Xu

Wi-Fi fingerprinting becomes a dominant solution for large-scale indoor localization due to its major advantage of not requiring new infrastructure and dedicated devices. The number and the distribution of Reference Points (RPs) for the…

Networking and Internet Architecture · Computer Science 2022-11-22 Zhe Tang , Sihao Li , Kyeong Soo Kim , Jeremy Smith

Fine-grained indoor localization has attracted attention recently because of the rapidly growing demand for indoor location-based services (ILBS). Specifically, massive (large-scale) multiple-input and multiple-output (MIMO) systems have…

Signal Processing · Electrical Eng. & Systems 2021-09-17 Chenglong Li , Sibren De Bast , Emmeric Tanghe , Sofie Pollin , Wout Joseph

Indoor Positioning Systems (IPSs) hold significant potential for enhancing visitor experiences in cultural heritage institutions. By enabling personalized navigation, efficient artifact organization, and better interaction with exhibits,…

Reconfigurable intelligent surfaces (RISs) not only assist communication but also help the localization of user equipment (UE). This study focuses on the indoor localization of UE with a single access point (AP) aided by multiple RISs.…

Information Theory · Computer Science 2025-05-06 Xiyu Wang , Yixuan Huang , Jie Yang , Yu Han , Shi Jin

We present an optimized algorithm for assigning fibers to targets in next-generation fiber-fed multi-object spectrographs. The method, that we named draining algorithm, ensures that the maximum number of targets in a given target field is…

Instrumentation and Methods for Astrophysics · Physics 2015-05-27 Isaac Morales , Antonio D. Montero-Dorta , Marco Azzaro , Francisco Prada , Justo Sanchez , Santiago Becerril

Context-aware applications have been gaining huge interest in the last few years. With cell phones becoming ubiquitous computing devices, cell phone localization has become an important research problem. In this paper, we present CellSense,…

Networking and Internet Architecture · Computer Science 2011-10-18 Mohamed Ibrahim , Moustafa Youssef

Instance segmentation of remote sensing images (RSIs) is an essential task for a wide range of applications such as land planning and intelligent transport. Instance segmentation of RSIs is constantly plagued by the unbalanced ratio of…

Computer Vision and Pattern Recognition · Computer Science 2024-09-12 Xuexue Li

We study the problem of localizing multiple sources of forced oscillations (FOs) and estimating their characteristics, such as frequency, phase, and amplitude, using noisy PMU measurements. For each source location, we model the input…

Applications · Statistics 2022-01-21 Rajasekhar Anguluri , Nima Taghipourbazargani , Oliver Kosut , Lalitha Sankar

Iris presentation attack detection (PAD) has achieved remarkable success to ensure the reliability and security of iris recognition systems. Most existing methods exploit discriminative features in the spatial domain and report outstanding…

Computer Vision and Pattern Recognition · Computer Science 2022-04-04 Yachun Li , Ying Lian , Jingjing Wang , Yuhui Chen , Chunmao Wang , Shiliang Pu

We propose a 6D Bayesian-based localization framework to estimate the position and rotation angles of a mobile station (MS) within an indoor reconfigurable intelligent surface (RIS)-aided system. This framework relies on a probabilistic…

Signal Processing · Electrical Eng. & Systems 2025-08-26 Leonardo Tercas , Markku Juntti

This paper proposes a predictive rate-selection framework based on Gaussian process (GP)-based radio map construction that is robust to location uncertainty. Radio maps are a promising tool for improving communication efficiency in 6G…

Signal Processing · Electrical Eng. & Systems 2025-09-19 Koya Sato

WiFi fingerprint-based indoor localization schemes deliver highly accurate location data by matching the received signal strength indicator (RSSI) with an offline database using machine learning (ML) or deep learning (DL) models. However,…

Cryptography and Security · Computer Science 2025-10-09 Fariha Tanjim Shifat , Sayma Sarwar Ela , Mosarrat Jahan