arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1606.00151cs.CV
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平面标记的定位与作图

Mapping and Localization from Planar Markers

Córdoba University(科尔多瓦大学)

Rafael Muñoz-Salinas, Manuel J. Marín-Jimenez, Enrique Yeguas-Bolivar, Rafael Medina-Carnicer

摘要:

方形平面标记是用于快速、准确和鲁棒的相机定位的流行工具,但是其使用通常限于单个标记,或者最多限于预先已知其相对姿态的一小组标记。从一个大的平面标记集的映射和定位是一个几乎没有处理的问题,有利于基于关键点的方法。然而,虽然关键点检测器对快速运动、视点的大变化或外观的显著变化不鲁棒,但基准标记可以在更宽范围的条件下鲁棒地检测。本文提出了一种新的方法,同时解决映射和定位问题的一组平方平面标记。首先,创建成对相对标记位姿的集合,从中获得初始位姿图。姿态图可能包含小的成对姿态误差,当传播时,会导致大的误差。因此,我们沿着图的基循环分布旋转和平移误差,以便获得校正的位姿图。最后,我们通过最小化所有观察帧中平面标记的重投影误差来执行全局姿态优化。实验结果表明,该方法优于运动恢复结构和视觉SLAM技术。

英文摘要:

Squared planar markers are a popular tool for fast, accurate and robust camera localization, but its use is frequently limited to a single marker, or at most, to a small set of them for which their relative pose is known beforehand. Mapping and localization from a large set of planar markers is yet a scarcely treated problem in favour of keypoint-based approaches. However, while keypoint detectors are not robust to rapid motion, large changes in viewpoint, or significant changes in appearance, fiducial markers can be robustly detected under a wider range of conditions. This paper proposes a novel method to simultaneously solve the problems of mapping and localization from a set of squared planar markers. First, a quiver of pairwise relative marker poses is created, from which an initial pose graph is obtained. The pose graph may contain small pairwise pose errors, that when propagated, leads to large errors. Thus, we distribute the rotational and translational error along the basis cycles of the graph so as to obtain a corrected pose graph. Finally, we perform a global pose optimization by minimizing the reprojection errors of the planar markers in all observed frames. The experiments conducted show that our method performs better than Structure from Motion and visual SLAM techniques.

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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