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We propose a novel visual localization and navigation framework for real-world environments directly integrating observed visual information into the bird-eye-view map. While the renderable neural radiance map (RNR-Map) shows considerable…

Image and Video Processing · Electrical Eng. & Systems 2024-10-10 Minsoo Kim , Obin Kwon , Howoong Jun , Songhwai Oh

Recovering surgical scene structure in laparoscope surgery is crucial step for surgical guidance and augmented reality applications. In this paper, a quasi dense reconstruction algorithm of surgical scene is proposed. This is based on a…

Computer Vision and Pattern Recognition · Computer Science 2017-05-26 Nader Mahmoud , Alexandre Hostettler , Toby Collins , Luc Soler , Christophe Doignon , J. M. M. Montiel

When adapting Simultaneous Mapping and Localization (SLAM) to real-world applications, such as autonomous vehicles, drones, and augmented reality devices, its memory footprint and computing cost are the two main factors limiting the…

Robotics · Computer Science 2022-11-04 Yeonsoo Park , Soohyun Bae

3D surface reconstruction from point clouds is a key step in areas such as content creation, archaeology, digital cultural heritage, and engineering. Current approaches either try to optimize a non-data-driven surface representation to fit…

Computer Vision and Pattern Recognition · Computer Science 2024-02-09 Philipp Erler , Lizeth Fuentes , Pedro Hermosilla , Paul Guerrero , Renato Pajarola , Michael Wimmer

In this paper, we propose a new method to reconstruct a signal corrupted by noise where both signal and noise are sparse but in different domains. The problem investigated in this paper arises in different applications such as impulsive…

Signal Processing · Electrical Eng. & Systems 2019-04-02 Sahar Sadrizadeh , Nematollah Zarmehi , Ehsan Asadi , Hamidreza Abin , Farokh Marvasti

An optical imager that exploits off-center image rotation to encode both the lateral and depth coordinates of point sources in a single snapshot can perform 3D localization and tracking of space debris. When actively illuminated, unresolved…

Instrumentation and Methods for Astrophysics · Physics 2018-12-24 Chao Wang , Robert Plemmons , Sudhakar Prasad , Raymond Chan , Mila Nikolova

Tooth point cloud segmentation is a fundamental task in many orthodontic applications. Current research mainly focuses on fully supervised learning which demands expensive and tedious manual point-wise annotation. Although recent…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Yifan Liu , Wuyang Li , Cheng Wang , Hui Chen , Yixuan Yuan

Accurate perception, state estimation and mapping are essential for safe robotic navigation as planners and controllers rely on these components for safety-critical decisions. However, existing mapping approaches often assume perfect pose…

We present a fast, scalable, and accurate Simultaneous Localization and Mapping (SLAM) system that represents indoor scenes as a graph of objects. Leveraging the observation that artificial environments are structured and occupied by…

Robotics · Computer Science 2020-11-06 Akash Sharma , Wei Dong , Michael Kaess

Collaborative navigation of heterogeneous robots in unknown environments poses significant challenges due to sensing, communication, and computational limitations. In this work, a lead robot navigates toward a target while a mobile sensor…

Robotics · Computer Science 2026-05-27 Evangelos Psomiadis , Dipankar Maity , Panagiotis Tsiotras

We introduce RACH-Space, an algorithm for labelling unlabelled data in weakly supervised learning, given incomplete, noisy information about the labels. RACH-Space offers simplicity in implementation without requiring hard assumptions on…

Machine Learning · Computer Science 2024-02-05 Woojoo Na , Abiy Tasissa

We present a robot navigation system that uses an imitation learning framework to successfully navigate in complex environments. Our framework takes a pre-built 3D scan of a real environment and trains an agent from pre-generated expert…

Robotics · Computer Science 2020-09-28 David Watkins-Valls , Jingxi Xu , Nicholas Waytowich , Peter Allen

Autonomous aerial robots are increasingly being deployed in real-world scenarios, where transparent obstacles present significant challenges to reliable navigation and mapping. These materials pose a unique problem for traditional…

Robotics · Computer Science 2025-10-09 Malakhi Hopkins , Varun Murali , Vijay Kumar , Camillo J Taylor

Multi-robot visual simultaneous localization and mapping (SLAM) system is normally consisted of multiple mobile robots equipped with camera and/or other visual sensors. The networked robots work independently or cooperatively in an unknown…

Robotics · Computer Science 2019-05-31 Biwei Li , Zhenqiang Mi , Yu Guo , Yang Yang , Mohammad S. Obaidat

Unlike loose coupling approaches and the EKF-based approaches in the literature, we propose an optimization-based visual-inertial SLAM tightly coupled with raw Global Navigation Satellite System (GNSS) measurements, a first attempt of this…

Robotics · Computer Science 2021-10-26 Jinxu Liu , Wei Gao , Zhanyi Hu

Classic vision-based navigation solutions, which are utilized in algorithms such as Simultaneous Localization and Mapping (SLAM), usually fail to work underwater when the water is murky and the quality of the recorded images is low. That is…

Image and Video Processing · Electrical Eng. & Systems 2019-11-12 Wenjie Chen , Mehdi Rahmati , Vidyasagar Sadhu , Dario Pompili

This paper presents a novel dataset for the development of visual navigation and simultaneous localisation and mapping (SLAM) algorithms as well as for underwater intervention tasks. It differs from existing datasets as it contains ground…

Computer Vision and Pattern Recognition · Computer Science 2021-07-30 Tomasz Luczynski , Jonatan Scharff Willners , Elizabeth Vargas , Joshua Roe , Shida Xu , Yu Cao , Yvan Petillot , Sen Wang

Simulating realistic environments for robots is widely recognized as a critical challenge in robot learning, particularly in terms of rendering and physical simulation. This challenge becomes even more pronounced in navigation tasks, where…

Robotics · Computer Science 2026-03-17 Jiahang Liu , Yuanxing Duan , Jiazhao Zhang , Minghan Li , Shaoan Wang , Zhizheng Zhang , He Wang

Writing an uncomplicated, robust, and scalable three-dimensional convex hull algorithm is challenging and problematic. This includes, coplanar and collinear issues, numerical accuracy, performance, and complexity trade-offs. While there are…

Computational Geometry · Computer Science 2023-04-11 Ben Kenwright

Visual Simultaneous Localization and Mapping (VSLAM) research faces significant challenges due to fragmented toolchains, complex system configurations, and inconsistent evaluation methodologies. To address these issues, we present…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Alejandro Fontan , Tobias Fischer , Javier Civera , Michael Milford