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This paper presents a novel visual-LiDAR odometry and mapping method with low-drift characteristics. The proposed method is based on two popular approaches, ORB-SLAM and A-LOAM, with monocular scale correction and visual-bootstrapped LiDAR…

Computer Vision and Pattern Recognition · Computer Science 2023-07-11 Hanyu Cai , Ni Ou , Junzheng Wang

One noted issue of vector-quantized variational autoencoder (VQ-VAE) is that the learned discrete representation uses only a fraction of the full capacity of the codebook, also known as codebook collapse. We hypothesize that the training…

Dense Bird's Eye View (BEV) semantic maps are central to autonomous driving, yet current multi-camera methods depend on costly, inconsistently annotated BEV ground truth. We address this limitation with a two-phase training strategy for…

Computer Vision and Pattern Recognition · Computer Science 2026-02-23 Daniel Busch , Christian Bohn , Thomas Kurbiel , Klaus Friedrichs , Richard Meyes , Tobias Meisen

As autonomous systems increasingly rely on onboard sensing for localization and perception, the parallel tasks of motion planning and state estimation become more strongly coupled. This coupling is well-captured by augmenting the planning…

Robotics · Computer Science 2020-09-14 Kristoffer M. Frey , Ted J. Steiner , Jonathan P. How

In this letter, we present a neural field-based real-time monocular mapping framework for accurate and dense Simultaneous Localization and Mapping (SLAM). Recent neural mapping frameworks show promising results, but rely on RGB-D or pose…

Robotics · Computer Science 2023-12-18 Wei Zhang , Tiecheng Sun , Sen Wang , Qing Cheng , Norbert Haala

Many visual simultaneous localization and mapping (SLAM) systems have been shown to be accurate and robust, and have real-time performance capabilities on both indoor and ground datasets. However, these methods can be problematic when…

Computer Vision and Pattern Recognition · Computer Science 2020-07-30 Zongqian Zhan , Wenjie Jian , Yihui Li , Xin Wang , Yang Yue

Traditional approaches for Visual Simultaneous Localization and Mapping (VSLAM) rely on low-level vision information for state estimation, such as handcrafted local features or the image gradient. While significant progress has been made…

Robotics · Computer Science 2021-08-05 Huaiyang Huang , Haoyang Ye , Yuxiang Sun , Lujia Wang , Ming Liu

Loop detection plays a key role in visual Simultaneous Localization and Mapping (SLAM) by correcting the accumulated pose drift. In indoor scenarios, the richly distributed semantic landmarks are view-point invariant and hold strong…

Computer Vision and Pattern Recognition · Computer Science 2023-05-25 Chuhao Liu , Shaojie Shen

We present a real-time semantic mapping approach for mobile vision systems with a 2D to 3D object detection pipeline and rapid data association for generated landmarks. Besides the semantic map enrichment the associated detections are…

Robotics · Computer Science 2022-03-25 Thorsten Hempel , Ayoub Al-Hamadi

Visual loop closure detection, which can be considered as an image retrieval task, is an important problem in SLAM (Simultaneous Localization and Mapping) systems. The frequently used bag-of-words (BoW) models can achieve high precision and…

Robotics · Computer Science 2019-11-26 Shan An , Guangfu Che , Fangru Zhou , Xianglong Liu , Xin Ma , Yu Chen

We propose a semi-supervised localization approach based on deep generative modeling with variational autoencoders (VAEs). Localization in reverberant environments remains a challenge, which machine learning (ML) has shown promise in…

Audio and Speech Processing · Electrical Eng. & Systems 2021-02-15 Michael J. Bianco , Sharon Gannot , Peter Gerstoft

Moving objects can greatly jeopardize the performance of a visual simultaneous localization and mapping (vSLAM) system which relies on the static-world assumption. Motion removal have seen successful on solving this problem. Two main…

Robotics · Computer Science 2019-08-01 Ting Sun , Yuxiang Sun , Ming Liu , Dit-Yan Yeung

Simultaneous Localization and Mapping (SLAM) is a critical task for autonomous navigation. However, due to the computational complexity of SLAM algorithms, it is very difficult to achieve real-time implementation on low-power platforms.We…

Signal Processing · Electrical Eng. & Systems 2019-06-13 Runze Liu , Jianlei Yang , Yiran Chen , Weisheng Zhao

Visual bird's eye view (BEV) semantic segmentation helps autonomous vehicles understand the surrounding environment only from images, including static elements (e.g., roads) and dynamic elements (e.g., vehicles, pedestrians). However, the…

Computer Vision and Pattern Recognition · Computer Science 2024-02-27 Junyu Zhu , Lina Liu , Yu Tang , Feng Wen , Wanlong Li , Yong Liu

To enhance the performance and effect of AR/VR applications and visual assistance and inspection systems, visual simultaneous localization and mapping (vSLAM) is a fundamental task in computer vision and robotics. However, traditional vSLAM…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Yichen Chen , Yiqi Pan , Ruyu Liu , Haoyu Zhang , Guodao Zhang , Bo Sun , Jianhua Zhang

Simultaneous localization and mapping (SLAM) is a fundamental capability required by most autonomous systems. In this paper, we address the problem of loop closing for SLAM based on 3D laser scans recorded by autonomous cars. Our approach…

Distributed as an open source library since 2013, RTAB-Map started as an appearance-based loop closure detection approach with memory management to deal with large-scale and long-term online operation. It then grew to implement Simultaneous…

Robotics · Computer Science 2024-03-12 Mathieu Labbé , François Michaud

Semi-supervised learning is attracting increasing attention due to the fact that datasets of many domains lack enough labeled data. Variational Auto-Encoder (VAE), in particular, has demonstrated the benefits of semi-supervised learning.…

Machine Learning · Computer Science 2018-12-04 Yang Li , Quan Pan , Suhang Wang , Haiyun Peng , Tao Yang , Erik Cambria

The visual-based SLAM (Simultaneous Localization and Mapping) is a technology widely used in applications such as robotic navigation and virtual reality, which primarily focuses on detecting feature points from visual images to construct an…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Qiong Chang , Xinyuan Chen , Xiang Li , Weimin Wang , Jun Miyazaki

LiDAR-based SLAM system is admittedly more accurate and stable than others, while its loop closure detection is still an open issue. With the development of 3D semantic segmentation for point cloud, semantic information can be obtained…

Robotics · Computer Science 2021-07-02 Lin Li , Xin Kong , Xiangrui Zhao , Wanlong Li , Feng Wen , Hongbo Zhang , Yong Liu