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arXiv 2309.04441cs.ROcs.CV
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基于视觉SLAM并使用基准标记的移动机器人定位比较研究

Comparative Study of Visual SLAM-Based Mobile Robot Localization Using Fiducial Markers

University of Illinois at Urbana-Champaign(伊利诺伊大学厄巴纳-香槟分校);University of Edinburgh(爱丁堡大学)

Jongwon Lee, Su Yeon Choi, David Hanley, Timothy Bretl

AI总结:

本文比较了基于视觉SLAM和基准标记的移动机器人定位的三种模式,发现定位模式运行时间最短,但在先验地图受扰动时,带有先验地图的SLAM表现更鲁棒。

摘要:

本文对使用基准标记(即具有黑白网格图案的方形人工地标)基于视觉SLAM的移动机器人定位的三种模式进行了比较研究:SLAM、带有先验地图的SLAM以及带有先验地图的定位。比较利用基准标记的基于SLAM的方法的原因是,先前的工作表明它们优于仅基于特征的方法,与同时使用特征和标记检测的方法相比,其计算负担更小,且不妥协定位性能。评估使用手持相机在环境中包含多个基准标记的室内图像序列进行。性能指标包括绝对轨迹误差和每帧优化过程的运行时间。特别是,对于后两种模式(SLAM和带有先验地图的定位),我们通过扰动先验地图的质量来评估它们的性能,以研究每种模式对此类扰动的容忍程度。硬件实验显示三种模式的轨迹误差水平一致,其中定位模式表现出最短的运行时间。然而,在地图扰动下,带有先验地图的SLAM保持性能,而定位模式在两方面均下降。

英文摘要:

This paper presents a comparative study of three modes for mobile robot localization based on visual SLAM using fiducial markers (i.e., square-shaped artificial landmarks with a black-and-white grid pattern): SLAM, SLAM with a prior map, and localization with a prior map. The reason for comparing the SLAM-based approaches leveraging fiducial markers is because previous work has shown their superior performance over feature-only methods, with less computational burden compared to methods that use both feature and marker detection without compromising the localization performance. The evaluation is conducted using indoor image sequences captured with a hand-held camera containing multiple fiducial markers in the environment. The performance metrics include absolute trajectory error and runtime for the optimization process per frame. In particular, for the last two modes (SLAM and localization with a prior map), we evaluate their performances by perturbing the quality of prior map to study the extent to which each mode is tolerant to such perturbations. Hardware experiments show consistent trajectory error levels across the three modes, with the localization mode exhibiting the shortest runtime among them. Yet, with map perturbations, SLAM with a prior map maintains performance, while localization mode degrades in both aspects.

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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