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arXiv 1604.04779cs.RO
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在复杂室外环境中的鲁棒单目飞行

Robust Monocular Flight in Cluttered Outdoor Environments

Carnegie Mellon University(卡内基梅隆大学)

Shreyansh Daftry, Sam Zeng, Arbaaz Khan, Debadeepta Dey, Narek Melik-Barkhudarov, J. Andrew Bagnell, Martial Hebert

摘要:

最近,在生物启发的轻型微型飞行器(MAV)的开发方面取得了许多进展。虽然自主导航对于大型无人机来说是相当直接的,因为可以使用昂贵的传感器和监控设备,但是对于在混乱的非结构化环境中在低空运行的MAV来说,用于避障的鲁棒方法仍然是一项具有挑战性的任务。由于有效载荷和功率的限制,这种系统必须具有自主导航和飞行能力,主要使用被动传感器,如相机。在本文中,我们描述了一个强大的系统,使自主导航的小型敏捷四旋翼在低空通过自然森林环境。我们提出了一种直接的深度估计方法,该方法能够实时的产生精确的、半密集的深度图。此外,一种新的抗风控制方案,使稳定的路点跟踪,即使在强风的存在。我们证明了我们的系统的性能,通过大量的实验,在一个杂乱的户外环境中的真实图像和现场测试。

英文摘要:

Recently, there have been numerous advances in the development of biologically inspired lightweight Micro Aerial Vehicles (MAVs). While autonomous navigation is fairly straight-forward for large UAVs as expensive sensors and monitoring devices can be employed, robust methods for obstacle avoidance remains a challenging task for MAVs which operate at low altitude in cluttered unstructured environments. Due to payload and power constraints, it is necessary for such systems to have autonomous navigation and flight capabilities using mostly passive sensors such as cameras. In this paper, we describe a robust system that enables autonomous navigation of small agile quad-rotors at low altitude through natural forest environments. We present a direct depth estimation approach that is capable of producing accurate, semi-dense depth-maps in real time. Furthermore, a novel wind-resistant control scheme is presented that enables stable way-point tracking even in the presence of strong winds. We demonstrate the performance of our system through extensive experiments on real images and field tests in a cluttered outdoor environment.

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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