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arXiv 2109.04087cs.CVcs.RO
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基于跨尺度视觉表示的实时的图像地理定位

Learning Cross-Scale Visual Representations for Real-Time Image Geo-Localization

University of Michigan(密歇根大学)

Tianyi Zhang, Matthew Johnson-Roberson

摘要:

机器人定位仍然是一个具有挑战性的任务,在GPS拒绝的环境。基于本地传感器(例如,相机或IMU)的状态估计方法对于远程任务来说随着误差累积而易于漂移。在这项研究中,我们的目标是解决这个问题,通过本地化的图像观测在二维多模态地理空间地图。我们介绍了跨尺度数据集和方法,以产生额外的数据,从跨模态源。我们提出了一个框架,学习跨尺度的视觉表示没有监督。实验进行的数据从两个不同的领域,水下和空中。与现有的跨视图图像地理定位研究相比,我们的方法a)在较小尺度的多模态地图上表现更好; b)对于实时的【形】应用来说计算效率更高; c)可以直接与状态估计管道协同工作。

英文摘要:

Robot localization remains a challenging task in GPS denied environments. State estimation approaches based on local sensors, e.g. cameras or IMUs, are drifting-prone for long-range missions as error accumulates. In this study, we aim to address this problem by localizing image observations in a 2D multi-modal geospatial map. We introduce the cross-scale dataset and a methodology to produce additional data from cross-modality sources. We propose a framework that learns cross-scale visual representations without supervision. Experiments are conducted on data from two different domains, underwater and aerial. In contrast to existing studies in cross-view image geo-localization, our approach a) performs better on smaller-scale multi-modal maps; b) is more computationally efficient for real-time applications; c) can serve directly in concert with state estimation pipelines.

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