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Effective monitoring of underwater ecosystems is crucial for tracking environmental changes, guiding conservation efforts, and ensuring long-term ecosystem health. However, automating underwater ecosystem management with robotic platforms…

Robotics · Computer Science 2025-12-03 Beverley Gorry , Tobias Fischer , Michael Milford , Alejandro Fontan

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

Visual place recognition techniques based on deep learning, which have imposed themselves as the state-of-the-art in recent years, do not generalize well to environments visually different from the training set. Thus, to achieve top…

Computer Vision and Pattern Recognition · Computer Science 2023-03-15 Pierre-Yves Lajoie , Giovanni Beltrame

Visual place recognition (VPR) is usually considered as a specific image retrieval problem. Limited by existing training frameworks, most deep learning-based works cannot extract sufficiently stable global features from RGB images and rely…

Computer Vision and Pattern Recognition · Computer Science 2023-03-23 Yanqing Shen , Sanping Zhou , Jingwen Fu , Ruotong Wang , Shitao Chen , Nanning Zheng

Visual localization, i.e., camera pose estimation in a known scene, is a core component of technologies such as autonomous driving and augmented reality. State-of-the-art localization approaches often rely on image retrieval techniques for…

Computer Vision and Pattern Recognition · Computer Science 2020-12-02 Noé Pion , Martin Humenberger , Gabriela Csurka , Yohann Cabon , Torsten Sattler

Visual place recognition is a challenging task in the field of computer vision, and autonomous robotics and vehicles, which aims to identify a location or a place from visual inputs. Contemporary methods in visual place recognition employ…

Computer Vision and Pattern Recognition · Computer Science 2024-05-29 Shyam Sundar Kannan , Byung-Cheol Min

LiDAR-based place recognition (LPR) plays a pivotal role in autonomous driving, which assists Simultaneous Localization and Mapping (SLAM) systems in reducing accumulated errors and achieving reliable localization. However, existing reviews…

Robotics · Computer Science 2024-12-09 Yongjun Zhang , Pengcheng Shi , Jiayuan Li

Place recognition is a challenging task in computer vision, crucial for enabling autonomous vehicles and robots to navigate previously visited environments. While significant progress has been made in learnable multimodal methods that…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Alexander Melekhin , Dmitry Yudin , Ilia Petryashin , Vitaly Bezuglyj

In autonomous driving, place recognition is critical for global localization in GPS-denied environments. LiDAR and radar-based place recognition methods have garnered increasing attention, as LiDAR provides precise ranging, whereas radar…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Zhangshuo Qi , Luqi Cheng , Zijie Zhou , Guangming Xiong

One of the central challenges in visual place recognition (VPR) is learning a robust global representation that remains discriminative under large viewpoint changes, illumination variations, and severe domain shifts. While visual foundation…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Hanyu Zhu , Zhihao Zhan , Yuhang Ming , Liang Li , Dibo Hou , Javier Civera , Wanzeng Kong

Visual Place Recognition (VPR) is a major challenge for robotics and autonomous systems, with the goal of predicting the location of an image based solely on its visual features. State-of-the-art (SOTA) models extract global descriptors…

Computer Vision and Pattern Recognition · Computer Science 2026-01-01 Shanshan Wan , Yingmei Wei , Lai Kang , Tianrui Shen , Haixuan Wang , Yee-Hong Yang

We propose a novel scoring concept for visual place recognition based on nearest neighbor descriptor voting and demonstrate how the algorithm naturally emerges from the problem formulation. Based on the observation that the number of votes…

Robotics · Computer Science 2018-06-08 Mathias Gehrig , Elena Stumm , Timo Hinzmann , Roland Siegwart

Visual place recognition is a critical task in computer vision, especially for localization and navigation systems. Existing methods often rely on contrastive learning: image descriptors are trained to have small distance for similar images…

Computer Vision and Pattern Recognition · Computer Science 2024-01-30 María Leyva-Vallina , Nicola Strisciuglio , Nicolai Petkov

Existing visual place recognition (VPR) datasets predominantly rely on vehicle-mounted imagery, offer limited multimodal diversity, and underrepresent dense pedestrian street scenes, particularly in non-Western urban contexts. We introduce…

Computer Vision and Pattern Recognition · Computer Science 2026-02-18 Yiwei Ou , Xiaobin Ren , Ronggui Sun , Guansong Gao , Kaiqi Zhao , Manfredo Manfredini

Visual Place Recognition (VPR) is a key component for localisation in GNSS-denied environments, but its performance critically depends on selecting an image matching threshold (operating point) that balances precision and recall. Thresholds…

Robotics · Computer Science 2026-02-05 Dhyey Manish Rajani , Michael Milford , Tobias Fischer

We are motivated by the fact that multiple representations of the environment are required to stand for the changes in appearance with time and for changes that appear in a cyclic manner. These changes are, for example, from day to night…

Computer Vision and Pattern Recognition · Computer Science 2018-08-02 A. H. Abdul Hafez , Nakul Agarwal , C. V. Jawahar

Visual Place Recognition (VPR) is generally concerned with localizing outdoor images. However, localizing indoor scenes that contain part of an outdoor scene can be of large value for a wide range of applications. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Sarah Ibrahimi , Nanne van Noord , Tim Alpherts , Marcel Worring

VPR is a fundamental task for autonomous navigation as it enables a robot to localize itself in the workspace when a known location is detected. Although accuracy is an essential requirement for a VPR technique, computational and energy…

Computer Vision and Pattern Recognition · Computer Science 2022-11-16 Bruno Ferrarini , Michael Milford , Klaus D. McDonald-Maier , Shoaib Ehsan

Place recognition is an important task within autonomous navigation, involving the re-identification of previously visited locations from an initial traverse. Unlike visual place recognition (VPR), LiDAR place recognition (LPR) is tolerant…

Robotics · Computer Science 2024-09-09 Therese Joseph , Tobias Fischer , Michael Milford

Visual Place Recognition (VPR) is crucial in computer vision, aiming to retrieve database images similar to a query image from an extensive collection of known images. However, like many vision tasks, VPR always degrades at night due to the…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Bingxi Liu , Yiqun Wang , Huaqi Tao , Tingjun Huang , Fulin Tang , Yihong Wu , Jinqiang Cui , Hong Zhang