arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.00420cs.RO
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VIR-SLAM:用于单台和多台机器人系统的视觉、惯性和测距SLAM

VIR-SLAM: Visual, Inertial, and Ranging SLAM for single and multi-robot systems

École Polytechnique de Montréal(蒙特利尔综合理工学院)

Yanjun Cao, Giovanni Beltrame

摘要:

与惯性测量相结合的单目相机通常给出高性能的视觉惯性测距法。然而,对于长轨迹,漂移可能是显著的,特别是当环境在视觉上具有挑战性时。在本文中,我们提出了一个系统,利用超宽带测距与一个静态锚放置在环境中,以纠正累积的错误,每当锚是可见的。我们还将此设置用于协作SLAM:不同的机器人使用相互测距(当可用时)和公共锚来估计彼此之间的变换,促进地图融合我们的系统由两个模块组成:用于单个机器人的双层测距,视觉和惯性测距,以及用于协作SLAM的变换估计模块。我们通过模拟超宽带传感器以及真实机器人在公共数据集上测试我们的系统。实验表明,我们的方法可以超过国家的最先进的视觉惯性里程超过20%。对于视觉上具有挑战性的环境,即使视觉惯性里程计具有显著的漂移,我们的方法也可以工作。此外,我们可以计算协作SLAM变换矩阵,几乎没有额外的计算成本。

英文摘要:

Monocular cameras coupled with inertial measurements generally give high performance visual inertial odometry. However, drift can be significant with long trajectories, especially when the environment is visually challenging. In this paper, we propose a system that leverages ultra-wideband ranging with one static anchor placed in the environment to correct the accumulated error whenever the anchor is visible. We also use this setup for collaborative SLAM: different robots use mutual ranging (when available) and the common anchor to estimate the transformation between each other, facilitating map fusion Our system consists of two modules: a double layer ranging, visual, and inertial odometry for single robots, and a transformation estimation module for collaborative SLAM. We test our system on public datasets by simulating an ultra-wideband sensor as well as on real robots. Experiments show our method can outperform state-of-the-art visual-inertial odometry by more than 20%. For visually challenging environments, our method works even the visual-inertial odometry has significant drift Furthermore, we can compute the collaborative SLAM transformation matrix at almost no extra computation cost.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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