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arXiv 2503.10692cs.CVcs.RO

探索在低空多视角观测条件下无人机视觉定位的最佳方法:一个基准

Exploring the best way for UAV visual localization under Low-altitude Multi-view Observation Condition: a Benchmark

National University of Defense Technology(国防科技大学)

Yibin Ye, Xichao Teng, Shuo Chen, Leqi Liu, Kun Wang, Xiaokai Song, Zhang Li

AI总结:

本文提出一个基准,用于评估低空多视角条件下无人机视觉定位方法,通过构建大规模数据集和统一框架,分析影响定位精度的关键因素,并提出新的检索指标PDM@K。

摘要:

绝对视觉定位(AVL)使无人机在GNSS拒止环境中通过建立无人机图像与地理标记参考地图之间的几何关系来确定其位置。尽管许多先前工作已通过图像检索和匹配技术实现了AVL,但在低空多视角场景中的研究仍然有限。低空多视角条件由于极端视角变化带来了更大的挑战。为了研究此类条件下有效的无人机AVL方法,我们提出了这个基准。首先,构建了一个大规模低空多视角数据集AnyVisLoc,包含18000张在多个场景和高度拍摄的图像,以及包含航拍测绘地图和历史卫星地图的2.5D参考地图。其次,提出了一种统一框架,整合了最先进的AVL方法并全面测试其性能。最佳组合方法被选为基线,基于此分析影响定位精度的关键因素。该基线在低空多视角条件下实现了5米内74.1%的定位精度。此外,引入了新的检索指标PDM@K,以更好地适应无人机AVL任务的特点。总体而言,该基准揭示了低空多视角无人机AVL的挑战,并为未来研究提供了有价值的指导。数据集和代码可在https://github.com/UAV-AVL/Benchmark获取。

英文摘要:

Absolute Visual Localization (AVL) enables an Unmanned Aerial Vehicle (UAV) to determine its position in GNSS-denied environments by establishing geometric relationships between UAV images and geo-tagged reference maps. While many previous works have achieved AVL with image retrieval and matching techniques, research in low-altitude multi-view scenarios still remains limited. Low-altitude multi-view conditions present greater challenges due to extreme viewpoint changes. To investigate effective UAV AVL approaches under such conditions, we present this benchmark. Firstly, a large-scale low-altitude multi-view dataset called AnyVisLoc was constructed. This dataset includes 18,000 images captured at multiple scenes and altitudes, along with 2.5D reference maps containing aerial photogrammetry maps and historical satellite maps. Secondly, a unified framework was proposed to integrate the state-of-the-art AVL approaches and comprehensively test their performance. The best combined method was chosen as the baseline, and the key factors influencing localization accuracy are thoroughly analyzed based on it. This baseline achieved a 74.1% localization accuracy within 5 m under low-altitude, multi-view conditions. In addition, a novel retrieval metric called PDM@K was introduced to better align with the characteristics of the UAV AVL task. Overall, this benchmark revealed the challenges of low-altitude, multi-view UAV AVL and provided valuable guidance for future research. The dataset and code are available at https://github.com/UAV-AVL/Benchmark

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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