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Accurately and reliably positioning pedestrians in satellite-denied conditions remains a significant challenge. Pedestrian dead reckoning (PDR) is commonly employed to estimate pedestrian location using low-cost inertial sensor. However,…

Robotics · Computer Science 2023-09-06 Zongyang Chen , Xianfei Pan , Changhao Chen

In autonomous driving, robust place recognition is critical for global localization and loop closure detection. While inter-modality fusion of camera and LiDAR data in multimodal place recognition (MPR) has shown promise in overcoming the…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Jingyi Xu , Zhangshuo Qi , Zhongmiao Yan , Xuyu Gao , Qianyun Jiao , Songpengcheng Xia , Xieyuanli Chen , Ling Pei

Pedestrian dead-reckoning (PDR) is a potential indoor localization technology that obtains location estimation with the inertial measurement unit (IMU). However, one of its most significant drawbacks is the accumulation of its measurement…

Signal Processing · Electrical Eng. & Systems 2023-01-10 Shangsheng Wen , Ziyang Ge , Danlan Yuan , Yingcong Chen , Xuecong Fang

Accurate and smooth global navigation satellite system (GNSS) positioning for pedestrians in urban canyons is still a challenge due to the multipath effects and the non-light-of-sight (NLOS) receptions caused by the reflections from…

Robotics · Computer Science 2024-05-08 Yihan Zhong , Weisong Wen , Li-Ta Hsu

Visual-inertial localization is a key problem in computer vision and robotics applications such as virtual reality, self-driving cars, and aerial vehicles. The goal is to estimate an accurate pose of an object when either the environment or…

Computer Vision and Pattern Recognition · Computer Science 2023-08-07 Felix Ott , Nisha Lakshmana Raichur , David Rügamer , Tobias Feigl , Heiko Neumann , Bernd Bischl , Christopher Mutschler

Aerial imagery and its direct application to visual localization is an essential problem for many Robotics and Computer Vision tasks. While Global Navigation Satellite Systems (GNSS) are the standard default solution for solving the aerial…

Computer Vision and Pattern Recognition · Computer Science 2024-11-01 Ivan Moskalenko , Anastasiia Kornilova , Gonzalo Ferrer

Visual place recognition (VPR) capabilities enable autonomous robots to navigate complex environments by discovering the environment's topology based on visual input. Most research efforts focus on enhancing the accuracy and robustness of…

Robotics · Computer Science 2023-10-10 Yiming Li , Zonglin Lyu , Mingxuan Lu , Chao Chen , Michael Milford , Chen Feng

Visual Place Recognition (VPR) systems often have imperfect performance, affecting the `integrity' of position estimates and subsequent robot navigation decisions. Previously, SVM classifiers have been used to monitor VPR integrity. This…

Computer Vision and Pattern Recognition · Computer Science 2024-11-20 Owen Claxton , Connor Malone , Helen Carson , Jason Ford , Gabe Bolton , Iman Shames , Michael Milford

Visual Place Recognition (VPR) is fundamental for the global re-localization of robots and devices, enabling them to recognize previously visited locations based on visual inputs. This capability is crucial for maintaining accurate mapping…

Computer Vision and Pattern Recognition · Computer Science 2024-09-13 Oliver Grainge , Michael Milford , Indu Bodala , Sarvapali D. Ramchurn , Shoaib Ehsan

Visual place recognition (VPR) is crucial for robots to identify previously visited locations, playing an important role in autonomous navigation in both indoor and outdoor environments. However, most existing VPR datasets are limited to…

Computer Vision and Pattern Recognition · Computer Science 2025-03-28 Yehui Shen , Lei Zhang , Qingqiu Li , Xiongwei Zhao , Yue Wang , Huimin Lu , Xieyuanli Chen

Geo-localization from a single image at planet scale (essentially an advanced or extreme version of the kidnapped robot problem) is a fundamental and challenging task in applications such as navigation, autonomous driving and disaster…

Computer Vision and Pattern Recognition · Computer Science 2025-07-24 Sania Waheed , Na Min An , Michael Milford , Sarvapali D. Ramchurn , Shoaib Ehsan

This paper introduces a cost effective localization system combining monocular visual odometry , augmented reality (AR) poses, and integrated INS-GPS data. We address monocular VO scale factor issues using AR poses and enhance accuracy with…

Robotics · Computer Science 2024-11-26 Ankit Shaw

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

While substantial progress has been made in the absolute performance of localization and Visual Place Recognition (VPR) techniques, it is becoming increasingly clear from translating these systems into applications that other capabilities…

Computer Vision and Pattern Recognition · Computer Science 2023-07-06 Helen Carson , Jason J. Ford , Michael Milford

Visual Place Recognition (VPR) is an image-based localization method that estimates the camera location of a query image by retrieving the most similar reference image from a map of geo-tagged reference images. In this work, we look into…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Mubariz Zaffar , Liangliang Nan , Julian Francisco Pieter Kooij

This paper proposes a method for tight fusion of visual, depth and inertial data in order to extend robotic capabilities for navigation in GPS-denied, poorly illuminated, and texture-less environments. Visual and depth information are fused…

Robotics · Computer Science 2019-03-06 Shehryar Khattak , Christos Papachristos , Kostas Alexis

Visual Place Recognition (VPR) is the process of recognising a previously visited place using visual information, often under varying appearance conditions and viewpoint changes and with computational constraints. VPR is related to the…

Computer Vision and Pattern Recognition · Computer Science 2021-10-05 Mubariz Zaffar , Sourav Garg , Michael Milford , Julian Kooij , David Flynn , Klaus McDonald-Maier , Shoaib Ehsan

Visual Place Recognition (VPR) is a critical task for performing global re-localization in visual perception systems. It requires the ability to accurately recognize a previously visited location under variations such as illumination,…

Computer Vision and Pattern Recognition · Computer Science 2023-12-15 Oliver Grainge , Michael Milford , Indu Bodala , Sarvapali D. Ramchurn , Shoaib Ehsan

Place recognition plays a crucial role in navigational assistance, and is also a challenging issue of assistive technology. The place recognition is prone to erroneous localization owing to various changes between database and query images.…

Computer Vision and Pattern Recognition · Computer Science 2019-09-17 Ruiqi Cheng , Kaiwei Wang , Jian Bai , Zhijie Xu

On the off-the-shelf navigational assistance devices, the localization precision is limited to the signal error of global navigation satellite system (GNSS). During travelling outdoors, the inaccurately localization perplexes visually…

Computer Vision and Pattern Recognition · Computer Science 2019-05-15 Ruiqi Cheng , Kaiwei Wang , Longqing Lin , Kailun Yang
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