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Visual place recognition (VPR), a fundamental task in computer vision and robotics, is the problem of identifying a place mainly based on visual information. Viewpoint and appearance changes, such as due to weather and seasonal variations,…

Computer Vision and Pattern Recognition · Computer Science 2022-03-02 Maria Waheed , Michael Milford , Klaus McDonald-Maier , Shoaib Ehsan

Visual place recognition (VPR) plays a crucial role in robotic localization and navigation. The key challenge lies in constructing feature representations that are robust to environmental changes. Existing methods typically adopt…

Computer Vision and Pattern Recognition · Computer Science 2025-06-17 Weiwei Wang , Meijia Wang , Haoyi Wang , Wenqiang Guo , Jiapan Guo , Changming Sun , Lingkun Ma , Weichuan Zhang

Stand-alone Visual Place Recognition (VPR) systems have little defence against a well-designed adversarial attack, which can lead to disastrous consequences when deployed for robot navigation. This paper extensively analyzes the effect of…

Computer Vision and Pattern Recognition · Computer Science 2025-06-23 Connor Malone , Owen Claxton , Iman Shames , Michael Milford

As one of most fascinating machine learning techniques, deep neural network (DNN) has demonstrated excellent performance in various intelligent tasks such as image classification. DNN achieves such performance, to a large extent, by…

Computer Vision and Pattern Recognition · Computer Science 2018-03-16 Zihao Liu , Tao Liu , Wujie Wen , Lei Jiang , Jie Xu , Yanzhi Wang , Gang Quan

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

Place recognition and loop closure detection are challenging for long-term visual navigation tasks. SeqSLAM is considered to be one of the most successful approaches to achieving long-term localization under varying environmental conditions…

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

This paper presents a lightweight visual place recognition approach, capable of achieving high performance with low computational cost, and feasible for mobile robotics under significant viewpoint and appearance changes. Results on several…

Robotics · Computer Science 2019-10-29 Ahmad Khaliq , Shoaib Ehsan , Zetao Chen , Michael Milford , Klaus McDonald-Maier

Given a query image, Visual Place Recognition (VPR) is the task of retrieving an image of the same place from a reference database with robustness to viewpoint and appearance changes. Recent works show that some VPR benchmarks are solved by…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Mubariz Zaffar , Liangliang Nan , Sebastian Scherer , Julian F. P. Kooij

Visual Place Recognition (VPR) aims to match query images against a database using visual cues. State-of-the-art methods aggregate features from deep backbones to form global descriptors. Optimal transport-based aggregation methods…

Computer Vision and Pattern Recognition · Computer Science 2026-02-02 Zhenyu Li , Tianyi Shang

With advances in image recognition technology based on deep learning, automatic video analysis by Artificial Intelligence is becoming more widespread. As the amount of video used for image recognition increases, efficient compression…

Computer Vision and Pattern Recognition · Computer Science 2023-04-04 Takahiro Shindo , Taiju Watanabe , Kein Yamada , Hiroshi Watanabe

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…

Computer Vision and Pattern Recognition · Computer Science 2019-04-23 Federico Camposeco , Andrea Cohen , Marc Pollefeys , Torsten Sattler

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

Autonomous navigation emerges from both motion and local visual perception in real-world environments. However, most successful robotic motion estimation methods (e.g. VO, SLAM, SfM) and vision systems (e.g. CNN, visual place…

Robotics · Computer Science 2020-03-03 Marvin Chancán , Michael Milford

Convolutional Neural Networks (CNNs) have recently been shown to excel at performing visual place recognition under changing appearance and viewpoint. Previously, place recognition has been improved by intelligently selecting relevant…

Robotics · Computer Science 2018-10-31 Stephen Hausler , Adam Jacobson , Michael Milford

Recent advances in deep learning have led to superhuman performance across a variety of applications. Recently, these methods have been successfully employed to improve the rate-distortion performance in the task of image compression.…

Image and Video Processing · Electrical Eng. & Systems 2022-02-01 Ankur Mali , Alexander Ororbia , Daniel Kifer , Lee Giles

Digital cameras digitize scene light into linear raw representations, which the image signal processor (ISP) converts into display-ready outputs. While raw data preserves full sensor information--valuable for editing and vision…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Mahmoud Afifi , Ran Zhang , Michael S. Brown

LiDAR-based place recognition (LPR) is one of the most crucial components of autonomous vehicles to identify previously visited places in GPS-denied environments. Most existing LPR methods use mundane representations of the input point…

Computer Vision and Pattern Recognition · Computer Science 2023-10-09 Junyi Ma , Guangming Xiong , Jingyi Xu , Xieyuanli Chen

This paper investigates the advantages of using Bird's Eye View (BEV) representation in 360-degree visual place recognition (VPR). We propose a novel network architecture that utilizes the BEV representation in feature extraction, feature…

Computer Vision and Pattern Recognition · Computer Science 2023-05-24 Xuecheng Xu , Yanmei Jiao , Sha Lu , Xiaqing Ding , Rong Xiong , Yue Wang

Convolutional Neural Networks (CNNs) have proved very accurate in multiple computer vision image classification tasks that required visual inspection in the past (e.g., object recognition, face detection, etc.). Motivated by these…

Computer Vision and Pattern Recognition · Computer Science 2020-09-28 Sara Mandelli , Nicolò Bonettini , Paolo Bestagini , Stefano Tubaro