arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.05242cs.ROeess.IV
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基于仿真的地面车辆激光雷达超分辨

Simulation-based Lidar Super-resolution for Ground Vehicles

Massachusetts Institute of Technology(麻省理工学院);Stevens Institute of Technology(史蒂文斯理工学院)

Tixiao Shan, Jinkun Wang, Fanfei Chen, Paul Szenher, Brendan Englot

摘要:

我们提出了一种用于地面车辆在道路上行驶的激光雷达超分辨率的方法,该方法完全依赖于驾驶模拟器,通过深度学习来增强物理激光雷达的表观分辨率。为了提高稀疏3D激光雷达捕获的点云的分辨率,我们将这个问题从3D欧氏空间转换为2D图像空间中的图像超分辨率问题,使用深度卷积神经网络来解决。通过将点云投影到距离图像上,我们能够使用深度神经网络有效地增强这种图像的分辨率。通常,深度神经网络的训练需要大量的真实数据。我们的方法不需要任何真实世界的数据,因为我们纯粹使用计算机生成的数据来训练网络。因此,我们的方法是适用于任何类型的三维激光雷达增强理论。通过在网络中新颖地应用Monte-Carlo dropout并去除具有高不确定性的预测,我们的方法产生了与真实高分辨率激光雷达的观测相媲美的高精度点云。我们目前的实验结果,将我们的方法应用到几个模拟和真实世界的数据集。我们认为,该方法的潜在好处,在现实世界中的机器人应用,如占用地图和地形建模。

英文摘要:

We propose a methodology for lidar super-resolution with ground vehicles driving on roadways, which relies completely on a driving simulator to enhance, via deep learning, the apparent resolution of a physical lidar. To increase the resolution of the point cloud captured by a sparse 3D lidar, we convert this problem from 3D Euclidean space into an image super-resolution problem in 2D image space, which is solved using a deep convolutional neural network. By projecting a point cloud onto a range image, we are able to efficiently enhance the resolution of such an image using a deep neural network. Typically, the training of a deep neural network requires vast real-world data. Our approach does not require any real-world data, as we train the network purely using computer-generated data. Thus our method is applicable to the enhancement of any type of 3D lidar theoretically. By novelly applying Monte-Carlo dropout in the network and removing the predictions with high uncertainty, our method produces high accuracy point clouds comparable with the observations of a real high resolution lidar. We present experimental results applying our method to several simulated and real-world datasets. We argue for the method's potential benefits in real-world robotics applications such as occupancy mapping and terrain modeling.

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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