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Visual localization aims to determine the camera pose of a query image relative to a database of posed images. In recent years, deep neural networks that directly regress camera poses have gained popularity due to their fast inference…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Siyan Dong , Shuzhe Wang , Shaohui Liu , Lulu Cai , Qingnan Fan , Juho Kannala , Yanchao Yang

Camera pose estimation or camera relocalization is the centerpiece in numerous computer vision tasks such as visual odometry, structure from motion (SfM) and SLAM. In this paper we propose a neural network approach with a graph transformer…

Computer Vision and Pattern Recognition · Computer Science 2021-06-01 Xinyi Li , Haibin Ling

Retrieving images from the same location as a given query is an important component of multiple computer vision tasks, like Visual Place Recognition, Landmark Retrieval, Visual Localization, 3D reconstruction, and SLAM. However, existing…

Computer Vision and Pattern Recognition · Computer Science 2025-06-11 Gabriele Berton , Carlo Masone

LiDAR relocalization aims to estimate the global 6-DoF pose of a sensor in the environment. However, existing regression-based approaches are prone to dynamic or ambiguous scenarios, as they either solely rely on single-frame inference or…

Computer Vision and Pattern Recognition · Computer Science 2026-02-04 Minghang Zhu , Zhijing Wang , Yuxin Guo , Wen Li , Sheng Ao , Cheng Wang

Visual relocalization has been a widely discussed problem in 3D vision: given a pre-constructed 3D visual map, the 6 DoF (Degrees-of-Freedom) pose of a query image is estimated. Relocalization in large-scale indoor environments enables…

Computer Vision and Pattern Recognition · Computer Science 2022-07-27 Jiahui Zhang , Shitao Tang , Kejie Qiu , Rui Huang , Chuan Fang , Le Cui , Zilong Dong , Siyu Zhu , Ping Tan

Portable 360$^\circ$ cameras are becoming a cheap and efficient tool to establish large visual databases. By capturing omnidirectional views of a scene, these cameras could expedite building environment models that are essential for visual…

Computer Vision and Pattern Recognition · Computer Science 2024-06-03 Huajian Huang , Changkun Liu , Yipeng Zhu , Hui Cheng , Tristan Braud , Sai-Kit Yeung

We address the problem of vehicle self-localization from multi-modal sensor information and a reference map. The map is generated off-line by extracting landmarks from the vehicle's field of view, while the measurements are collected…

Robotics · Computer Science 2019-07-22 Nico Engel , Stefan Hoermann , Markus Horn , Vasileios Belagiannis , Klaus Dietmayer

The process of obtaining high-resolution images from single or multiple low-resolution images of the same scene is of great interest for real-world image and signal processing applications. This study is about exploring the potential usage…

Computer Vision and Pattern Recognition · Computer Science 2022-09-22 David O'Callaghan , Cian Ryan , Waseem Shariff , Muhammad Ali Farooq , Joseph Lemley , Peter Corcoran

Geolocating precise locations from images presents a challenging problem in computer vision and information retrieval.Traditional methods typically employ either classification, which dividing the Earth surface into grid cells and…

Computer Vision and Pattern Recognition · Computer Science 2024-07-31 Zhongliang Zhou , Jielu Zhang , Zihan Guan , Mengxuan Hu , Ni Lao , Lan Mu , Sheng Li , Gengchen Mai

This paper presents LiteVLoc, a hierarchical visual localization framework that uses a lightweight topo-metric map to represent the environment. The method consists of three sequential modules that estimate camera poses in a coarse-to-fine…

Several visual tasks, such as pedestrian detection and image-to-image translation, are challenging to accomplish in low light using RGB images. Heat variation of objects in thermal images can be used to overcome this. In this work, an…

Computer Vision and Pattern Recognition · Computer Science 2023-11-10 Md Azim Khan

Multi-Object Tracking in thermal images is essential for surveillance systems, particularly in challenging environments where RGB cameras struggle due to low visibility or poor lighting conditions. Thermal sensors enhance recognition tasks…

Computer Vision and Pattern Recognition · Computer Science 2025-07-04 Duong Nguyen-Ngoc Tran , Long Hoang Pham , Chi Dai Tran , Quoc Pham-Nam Ho , Huy-Hung Nguyen , Jae Wook Jeon

Reliable localization is critical for robot navigation, yet most existing systems implicitly assume that all viewing directions at a location are equally informative. In practice, localization becomes unreliable when the robot observes…

Robotics · Computer Science 2025-08-29 Jiajie Li , Boyang Sun , Luca Di Giammarino , Hermann Blum , Marc Pollefeys

Visible face recognition systems achieve nearly perfect recognition accuracies using deep learning. However, in lack of light, these systems perform poorly. A way to deal with this problem is thermal to visible cross-domain face matching.…

Computer Vision and Pattern Recognition · Computer Science 2020-02-12 Alperen Kantarcı , Hazım Kemal Ekenel

With the fast growth in the visual surveillance and security sectors, thermal infrared images have become increasingly necessary ina large variety of industrial applications. This is true even though IR sensors are still more expensive than…

Machine Learning · Computer Science 2018-12-24 Feras Almasri , Olivier Debeir

Video action detectors are usually trained using datasets with fully-supervised temporal annotations. Building such datasets is an expensive task. To alleviate this problem, recent methods have tried to leverage weak labeling, where videos…

Computer Vision and Pattern Recognition · Computer Science 2020-11-10 Alejandro Pardo , Humam Alwassel , Fabian Caba Heilbron , Ali Thabet , Bernard Ghanem

An accurate and robust large-scale localization system is an integral component for active areas of research such as autonomous vehicles and augmented reality. To this end, many learning algorithms have been proposed that predict 6DOF…

Computer Vision and Pattern Recognition · Computer Science 2022-03-02 Ali Raza , Lazar Lolic , Shahmir Akhter , Alfonso Dela Cruz , Michael Liut

Rapid advances in deep learning for computer vision have driven the adoption of RGB camera-based adaptive traffic light systems to improve traffic safety and pedestrian comfort. However, these systems often overlook the needs of people with…

Computer Vision and Pattern Recognition · Computer Science 2025-05-15 Xiao Ni , Carsten Kuehnel , Xiaoyi Jiang

Recovering the past from present observations is an intriguing challenge with potential applications in forensics and scene analysis. Thermal imaging, operating in the infrared range, provides access to otherwise invisible information.…

Computer Vision and Pattern Recognition · Computer Science 2026-05-13 Kebin Contreras , Luis Toscano-Palomino , Mauro Dalla Mura , Jorge Bacca

Existing localization methods that intensively leverage the environment-specific received signal strength (RSS) or channel state information (CSI) of wireless signals are rather accurate in certain environments. However, these methods,…

Signal Processing · Electrical Eng. & Systems 2023-08-30 Jun Gao , Dongze Wu , Feng Yin , Qinglei Kong , Lexi Xu , Shuguang Cui