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A robust visual localization and mapping system is essential for warehouse robot navigation, as cameras offer a more cost-effective alternative to LiDAR sensors. However, existing forward-facing camera systems often encounter challenges in…

Robotics · Computer Science 2025-04-17 Kuan Xu , Zheng Yang , Lihua Xie , Chen Wang

As reinforcement learning (RL) has achieved great success and been even adopted in safety-critical domains such as autonomous vehicles, a range of empirical studies have been conducted to improve its robustness against adversarial attacks.…

Machine Learning · Computer Science 2022-03-17 Fan Wu , Linyi Li , Zijian Huang , Yevgeniy Vorobeychik , Ding Zhao , Bo Li

Reliable loop closure detection remains a critical challenge in 3D LiDAR-based SLAM, especially under sensor noise, environmental ambiguity, and viewpoint variation conditions. RANSAC is often used in the context of loop closures for…

Robotics · Computer Science 2026-03-06 Javier Laserna , Saurabh Gupta , Oscar Martinez Mozos , Cyrill Stachniss , Pablo San Segundo

Recognizing a previously visited place, also known as place recognition (or loop closure detection) is the key towards fully autonomous mobile robots and self-driving vehicle navigation. Augmented with various Simultaneous Localization and…

Robotics · Computer Science 2017-04-19 Ashwin Mathur , Fei Han , Hao Zhang

We present a simple yet effective method to address loop closure detection in simultaneous localisation and mapping using local 3D deep descriptors (L3Ds). L3Ds are emerging compact representations of patches extracted from point clouds…

Computer Vision and Pattern Recognition · Computer Science 2022-03-01 Youjie Zhou , Yiming Wang , Fabio Poiesi , Qi Qin , Yi Wan

Loop closure, as one of the crucial components in SLAM, plays an essential role in correcting the accumulated errors. Traditional appearance-based methods, such as bag-of-words models, are often limited by local 2D features and the volume…

Computer Vision and Pattern Recognition · Computer Science 2023-11-10 Zhenzhong Cao

Loop closure is crucial for maintaining the accuracy and consistency of visual SLAM. We propose a method to improve loop closure performance in DPV-SLAM. Our approach integrates AnyLoc, a learning-based visual place recognition technique,…

Robotics · Computer Science 2026-01-07 Wenzheng Zhang , Kazuki Adachi , Yoshitaka Hara , Sousuke Nakamura

Tuning parameters is crucial for the performance of localization and mapping algorithms. In general, the tuning of the parameters requires expert knowledge and is sensitive to information about the structure of the environment. In order to…

Robotics · Computer Science 2020-11-13 Nils Rottmann , Ralf Bruder , Honghu Xue , Achim Schweikard , Elmar Rueckert

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…

The autonomous mapping of large-scale urban scenes presents significant challenges for autonomous robots. To mitigate the challenges, global planning, such as utilizing prior GPS trajectories from OpenStreetMap (OSM), is often used to guide…

Robotics · Computer Science 2024-07-25 Wei Gao , Zezhou Sun , Mingle Zhao , Cheng-Zhong Xu , Hui Kong

Loop closures are essential for correcting odometry drift and creating consistent maps, especially in the context of large-scale navigation. Current methods using dense point clouds for accurate place recognition do not scale well due to…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Débora N. P. Oliveira , Joshua Knights , Sebastián Barbas Laina , Simon Boche , Wolfram Burgard , Stefan Leutenegger

Collision avoidance is key for mobile robots and agents to operate safely in the real world. In this work we present SAFER, an efficient and effective collision avoidance system that is able to improve safety by correcting the control…

Robotics · Computer Science 2023-06-30 Mario Srouji , Hugues Thomas , Hubert Tsai , Ali Farhadi , Jian Zhang

One of the main challenges in the Simultaneous Localization and Mapping (SLAM) loop closure problem is the recognition of previously visited places. In this work, we tackle the two main problems of real-time SLAM systems: 1) loop closure…

Computer Vision and Pattern Recognition · Computer Science 2025-07-22 Mohammad-Maher Nakshbandi , Ziad Sharawy , Sorin Grigorescu

Simultaneous localization and mapping (SLAM) algorithms are essential for the autonomous navigation of mobile robots. With the increasing demand for autonomous systems, it is crucial to evaluate and compare the performance of these…

Robotics · Computer Science 2024-01-23 Nwankwo Linus , Elmar Rueckert

Significant advances have been made recently in Visual Place Recognition (VPR), feature correspondence, and localization due to the proliferation of deep-learning-based methods. However, existing approaches tend to address, partially or…

Computer Vision and Pattern Recognition · Computer Science 2020-12-22 Satyajit Tourani , Dhagash Desai , Udit Singh Parihar , Sourav Garg , Ravi Kiran Sarvadevabhatla , Michael Milford , K. Madhava Krishna

Loop closure can effectively correct the accumulated error in robot localization, which plays a critical role in the long-term navigation of the robot. Traditional appearance-based methods rely on local features and are prone to failure in…

Robotics · Computer Science 2022-11-23 Junfeng Yu , Shaojie Shen

In this paper, we present a factor-graph LiDAR-SLAM system which incorporates a state-of-the-art deeply learned feature-based loop closure detector to enable a legged robot to localize and map in industrial environments. These facilities…

Robotics · Computer Science 2020-01-29 Milad Ramezani , Georgi Tinchev , Egor Iuganov , Maurice Fallon

Loop closing is a crucial component in SLAM that helps eliminate accumulated errors through two main steps: loop detection and loop pose correction. The first step determines whether loop closing should be performed, while the second…

Robotics · Computer Science 2024-11-12 Neng Wang , Xieyuanli Chen , Chenghao Shi , Zhiqiang Zheng , Hongshan Yu , Huimin Lu

Simultaneous Localization and Mapping (SLAM) is essential for mobile robotics, enabling autonomous navigation in dynamic, unstructured outdoor environments without relying on external positioning systems. These environments pose significant…

Robotics · Computer Science 2025-03-11 Fabian Schmidt , Constantin Blessing , Markus Enzweiler , Abhinav Valada

Place recognition is a critical component in robot navigation that enables it to re-establish previously visited locations, and simultaneously use this information to correct the drift incurred in its dead-reckoned estimate. In this work,…

Computer Vision and Pattern Recognition · Computer Science 2019-05-14 Sudeep Pillai , John Leonard