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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

We present a Visual Place Recognition system that follows the two-stage format common to image retrieval pipelines. The system encodes images of places by employing the activations of different layers of a pre-trained, off-the-shelf, VGG16…

Computer Vision and Pattern Recognition · Computer Science 2019-09-18 Luis G. Camara , Libor Přeučil

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 Place Recognition (VPR) is often characterized as being able to recognize the same place despite significant changes in appearance and viewpoint. VPR is a key component of Spatial Artificial Intelligence, enabling robotic platforms…

Robotics · Computer Science 2021-11-10 Sourav Garg , Tobias Fischer , Michael Milford

Visual place recognition (VPR) is an important component technology for camera-based mapping and navigation applications. This is a challenging problem because images of the same place may appear quite different for reasons including…

Computer Vision and Pattern Recognition · Computer Science 2025-12-11 Nick Trinh , Damian Lyons

Place Recognition is a crucial capability for mobile robot localization and navigation. Image-based or Visual Place Recognition (VPR) is a challenging problem as scene appearance and camera viewpoint can change significantly when places are…

Computer Vision and Pattern Recognition · Computer Science 2021-06-23 Sourav Garg , Michael Milford

Event cameras record sparse illumination changes with high temporal resolution and high dynamic range. Thanks to their sparse recording and low consumption, they are increasingly used in applications such as AR/VR and autonomous driving.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-24 Alberto Sabater , Luis Montesano , Ana C. Murillo

Visual Place Recognition (VPR) is a crucial component of many visual localization pipelines for embodied agents. VPR is often formulated as an image retrieval task aimed at jointly learning local features and an aggregation method. The…

Computer Vision and Pattern Recognition · Computer Science 2024-10-01 Ahmad Khaliq , Ming Xu , Stephen Hausler , Michael Milford , Sourav Garg

Event cameras respond to changes in log-brightness at the millisecond level, making them ideal for optical flow estimation. However, existing datasets from event cameras provide only low frame rate ground truth for optical flow, limiting…

Computer Vision and Pattern Recognition · Computer Science 2025-05-14 Yaozu Ye , Hao Shi , Kailun Yang , Ze Wang , Xiaoting Yin , Lei Sun , Yaonan Wang , Kaiwei Wang

Event cameras, featuring high temporal resolution and high dynamic range, offer visual sensing capabilities comparable to conventional image sensors while capturing fast-moving objects and handling scenes with extreme lighting contrasts…

Robotics · Computer Science 2025-10-21 Ryota Soga , Masataka Kobayashi , Tsukasa Shimizu , Shintaro Shiba , Quan Kong , Shan Lu , Takaya Yamazato

Visual place recognition (VPR) is typically regarded as a specific image retrieval task, whose core lies in representing images as global descriptors. Over the past decade, dominant VPR methods (e.g., NetVLAD) have followed a paradigm that…

Computer Vision and Pattern Recognition · Computer Science 2026-01-19 Feng Lu , Tong Jin , Canming Ye , Yunpeng Liu , Xiangyuan Lan , Chun Yuan

A new unified video analytics framework (ER3) is proposed for complex event retrieval, recognition and recounting, based on the proposed video imprint representation, which exploits temporal correlations among image features across video…

Computer Vision and Pattern Recognition · Computer Science 2021-06-08 Zhanning Gao , Le Wang , Nebojsa Jojic , Zhenxing Niu , Nanning Zheng , Gang Hua

Event cameras excel in capturing high-contrast scenes and dynamic objects, offering a significant advantage over traditional frame-based cameras. Despite active research into leveraging event cameras for semantic segmentation, generating…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Hoonhee Cho , Sung-Hoon Yoon , Hyeokjun Kweon , Kuk-Jin Yoon

Visual place recognition (VPR) aiming at predicting the location of an image based solely on its visual features is a fundamental task in robotics and autonomous systems. Domain variation remains one of the main challenges in VPR and is…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Shanshan Wan , Lai Kang , Yingmei Wei , Tianrui Shen , Haixuan Wang , Chao Zuo

A cross-domain visual place recognition (VPR) task is proposed in this work, i.e., matching images of the same architectures depicted in different domains. VPR is commonly treated as an image retrieval task, where a query image from an…

Computer Vision and Pattern Recognition · Computer Science 2019-09-12 Ziqi Wang , Jiahui Li , Seyran Khademi , Jan van Gemert

With the success of deep learning, object recognition systems that can be deployed for real-world applications are becoming commonplace. However, inference that needs to largely take place on the `edge' (not processed on servers), is a…

Computer Vision and Pattern Recognition · Computer Science 2020-01-30 Andres Ussa , Luca Della Vedova , Vandana Reddy Padala , Deepak Singla , Jyotibdha Acharya , Charles Zhang Lei , Garrick Orchard , Arindam Basu , Bharath Ramesh

Event-based cameras can overpass frame-based cameras limitations for important tasks such as high-speed motion detection during self-driving cars navigation in low illumination conditions. The event cameras' high temporal resolution and…

Computer Vision and Pattern Recognition · Computer Science 2022-01-31 Haixin Sun , Minh-Quan Dao , Vincent Fremont

Vehicle tracking is an integral part of intelligent traffic management systems. Previous implementations of vehicle tracking used Global Positioning System(GPS) based systems that gave location of the vehicle of an individual on their…

Computer Vision and Pattern Recognition · Computer Science 2020-05-19 Lalit Lakshmanan , Yash Vora , Raj Ghate

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 is an essential component of systems for camera localization and loop closure detection, and it has attracted widespread interest in multiple domains such as computer vision, robotics and AR/VR. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Rui Huang , Ze Huang , Songzhi Su