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Localizing an image wrt. a 3D scene model represents a core task for many computer vision applications. An increasing number of real-world applications of visual localization on mobile devices, e.g., Augmented Reality or autonomous robots…

计算机视觉与模式识别 · 计算机科学 2019-04-23 Federico Camposeco , Andrea Cohen , Marc Pollefeys , Torsten Sattler

Hybrid localization in GNSS-challenged environments using measured ranges and angles is becoming increasingly popular, in particular with the advent of multimodal communication systems. Here, we address the hybrid network localization…

信号处理 · 电气工程与系统科学 2021-10-08 Claudia Soares , Filipa Valdeira , Joao Gomes

Localizing more sources than sensors with a sparse linear array (SLA) has long relied on minimizing a distance between two covariance matrices and recent algorithms often utilize semidefinite programming (SDP). Although deep neural network…

信号处理 · 电气工程与系统科学 2025-03-11 Kuan-Lin Chen , Bhaskar D. Rao

Estimating the pose of a camera with respect to a 3D reconstruction or scene representation is a crucial step for many mixed reality and robotics applications. Given the vast amount of available data nowadays, many applications constrain…

计算机视觉与模式识别 · 计算机科学 2020-11-30 Marcela Mera-Trujillo , Benjamin Smith , Victor Fragoso

In this paper, we present a new approach for improving 3D point and line mapping regression for camera re-localization. Previous methods typically rely on feature matching (FM) with stored descriptors or use a single network to encode both…

计算机视觉与模式识别 · 计算机科学 2025-03-03 Bach-Thuan Bui , Huy-Hoang Bui , Yasuyuki Fujii , Dinh-Tuan Tran , Joo-Ho Lee

We investigate the problem of estimating the 3D shape of an object defined by a set of 3D landmarks, given their 2D correspondences in a single image. A successful approach to alleviating the reconstruction ambiguity is the 3D deformable…

计算机视觉与模式识别 · 计算机科学 2017-01-12 Xiaowei Zhou , Menglong Zhu , Spyridon Leonardos , Kostas Daniilidis

We present a new convex method to estimate 3D pose from mixed combinations of 2D-3D point and line correspondences, the Perspective-n-Points-and-Lines problem (PnPL). We merge the contributions of each point and line into a unified…

计算机视觉与模式识别 · 计算机科学 2019-08-12 Sérgio Agostinho , João Gomes , Alessio Del Bue

A Semidefinite Programming (SDP) relaxation is an effective computational method to solve a Sensor Network Localization problem, which attempts to determine the locations of a group of sensors given the distances between some of them [11].…

度量几何 · 数学 2012-11-16 Davood Shamsi , Nicole Taheri , Zhisu Zhu , Yinyu Ye

With the emerging environment-aware applications, ubiquitous sensing is expected to play a key role in future networks. In this paper, we study a 3-dimensional (3D) multi-target localization system where multiple intelligent reflecting…

信息论 · 计算机科学 2024-02-29 Meng Hua , Guangji Chen , Kaitao Meng , Shaodan Ma , Chau Yuen , Hing Cheung So

This paper presents an optimal calibration scheme and a weighted least squares (LS) localization algorithm for received signal strength (RSS) based visible light positioning (VLP) systems, focusing on the often overlooked impact of light…

信号处理 · 电气工程与系统科学 2024-11-19 Fan Wu , Nobby Stevens , Lieven De Strycker , François Rottenberg

Precise initialization plays a critical role in the performance of localization algorithms, especially in the context of robotics, autonomous driving, and computer vision. Poor localization accuracy is often a consequence of inaccurate…

机器人学 · 计算机科学 2025-05-15 Srinivas Ravuri , Yuan Xu , Martin Ludwig Zehetner , Ketan Motlag , Sahin Albayrak

The magnetic near-field provides a suitable means for indoor localization, due to its insensitivity to the environment and strong spatial gradients. We consider indoor localization setups consisting of flat coils, allowing for convenient…

应用统计 · 统计学 2022-06-08 Gregor Dumphart , Eric Slottke , Armin Wittneben

Mobile robots and autonomous vehicles are often required to function in environments where critical position estimates from sensors such as GPS become uncertain or unreliable. Single image visual place recognition (VPR) provides an…

计算机视觉与模式识别 · 计算机科学 2024-07-02 Connor Malone , Ankit Vora , Thierry Peynot , Michael Milford

This paper presents a novel approach to range-based cooperative localization for robot swarms in GPS-denied environments, addressing the limitations of current methods in noisy and sparse settings. We propose a robust multi-layered…

机器人学 · 计算机科学 2024-12-20 Atharva Sagale , Tohid Kargar Tasooji , Ramviyas Parasuraman

Collaborative Filtering (CF) is a foundational approach in recommender systems, but it struggles with challenges such as data sparsity and the cold-start problem. Cross-Domain Recommendation (CDR) has emerged as a promising solution by…

信息检索 · 计算机科学 2025-09-18 Jeongeun Lee , Seongku Kang , Won-Yong Shin , Jeongwhan Choi , Noseong Park , Dongha Lee

In this paper, we propose a unified localization framework (called UNILocPro) that integrates model-based localization and channel charting (CC) for mixed line-of-sight (LoS)/non-line-of-sight (NLoS) scenarios. Specifically, based on…

信号处理 · 电气工程与系统科学 2025-11-03 Yuhao Zhang , Guangjin Pan , Musa Furkan Keskin , Ossi Kaltiokallio , Mikko Valkama , Henk Wymeersch

Visual Place Recognition (VPR) enables coarse localization by comparing query images to a reference database of geo-tagged images. Recent breakthroughs in deep learning architectures and training regimes have led to methods with improved…

计算机视觉与模式识别 · 计算机科学 2025-06-30 Connor Malone , Somayeh Hussaini , Tobias Fischer , Michael Milford

Point-based object localization (POL), which pursues high-performance object sensing under low-cost data annotation, has attracted increased attention. However, the point annotation mode inevitably introduces semantic variance for the…

计算机视觉与模式识别 · 计算机科学 2022-03-18 Xuehui Yu , Pengfei Chen , Di Wu , Najmul Hassan , Guorong Li , Junchi Yan , Humphrey Shi , Qixiang Ye , Zhenjun Han

The sensor network localization, SNL, problem in embedding dimension r, consists of locating the positions of wireless sensors, given only the distances between sensors that are within radio range and the positions of a subset of the…

最优化与控制 · 数学 2010-02-02 Nathan Krislock , Henry Wolkowicz

We present a novel application of a recently-proposed matrix-parametrized proximal splitting method to sensor network localization, the problem of estimating the locations of a set of sensors using only noisy pairwise distance information…

最优化与控制 · 数学 2025-03-18 Peter Barkley , Robert L. Bassett