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首页> 外文期刊>IEEE Transactions on Geoscience and Remote Sensing >Rapid Updating and Improvement of Airborne LIDAR DEMs Through Ground-Based SfM 3-D Modeling of Volcanic Features
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Rapid Updating and Improvement of Airborne LIDAR DEMs Through Ground-Based SfM 3-D Modeling of Volcanic Features

机译：通过地面火山特征的SfM 3-D建模快速更新和改进机载LIDAR DEM

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摘要

We present a workflow to create, scale, georeference, and integrate digital elevation models (DEMs) created using open-source structure-from-motion (SfM) multiview stereo (MVS) software into existing DEMs (as derived from the light detection and ranging data in the presented cases). The workflow also maps the root-mean-square error between the base DEM and the SfM surface model. This allows DEM creation from field-based surveys using consumer-grade digital cameras with open-source and custom-built software. We employ this workflow on three examples of different scales and morphology: 1) a scoria cone on Mt. Etna; 2) a lava channel on Mauna Ulu (Ki̅lauea); and 3) a flank collapse scar on Mt. Etna. This represents a new approach for rapid low-cost construction and updating of existing DEMs at high temporal and spatial resolutions and for areas of up to several thousand square meters. We assess the self-consistency of the method by comparison of DEMs of the same features, created from independent data sets acquired on the same day and from the same vantage points. We further evaluate the effect of grid cell size on the reconstruction error. This method uses existing DEMs as a georeferencing tool and can therefore be used in limited access and potentially hazardous areas as it no longer relies exclusively on control targets on the ground.
机译：我们提供了一个工作流程，用于创建，缩放，地理配准以及将使用开源运动动态（SfM）多视图立体声（MVS）软件创建的数字高程模型（DEM）集成到现有的DEM中（从光检测和测距中得出）呈现的案例中的数据）。工作流还映射了基本DEM和SfM表面模型之间的均方根误差。这允许使用带有开放源代码和定制软件的消费级数码相机从基于现场的调查中创建DEM。我们在三个不同比例和形态的示例中采用此工作流程：1）山上的鳞屑锥。埃特纳火山2）在莫纳乌鲁（基拉韦厄）上的熔岩通道；和3）山上的后牙塌陷疤痕。埃特纳火山。这代表了一种新的方法，可以以高的时间和空间分辨率快速地低成本构建和更新现有的DEM，面积可达数千平方米。我们通过比较具有相同特征的DEM来评估该方法的自洽性，该DEM是根据在同一天和相同优势点获取的独立数据集创建的。我们进一步评估网格单元大小对重建误差的影响。这种方法将现有的DEM用作地理配准工具，因此，由于它不再完全依赖于地面上的控制目标，因此可以在有限的访问区域和潜在的危险区域中使用。

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  • 来源
    《IEEE Transactions on Geoscience and Remote Sensing》 |2016年第11期|6687-6699|共13页
  • 作者

    Stephan Kolzenburg; M. Favalli; A. Fornaciai; I. Isola; A. J. L. Harris; L. Nannipieri; D. Giordano;

  • 作者单位

    Dipartimento di Scienze della Terra, Università degli Studi di Torino, Istituto Nazionale di Geofisica e Vulcanologia-Sezione di Pisa, Turin, Pisa, ItalyItaly;

    Istituto Nazionale di Geofisica e Vulcanologia-Sezione di Pisa, Pisa, Italy;

    Dipartimento di Fisica e Astronomia, Istituto Nazionale di Geofisica e Vulcanologia-Sezione di Pisa, Alma Mater Studiorum Università di Bologna, Pisa, Bologna, ItalyItaly;

    Istituto Nazionale di Geofisica e Vulcanologia-Sezione di Pisa, Pisa, Italy;

    Laboratoire Magmas et Volcans, Université de Clermont-Ferrand II (Université Blaise Pascal), Clermont-Ferrand, France;

    Istituto Nazionale di Geofisica e Vulcanologia-Sezione di Pisa, Pisa, Italy;

    Dipartimento di Scienze della Terra, Università degli Studi di Torino, Istituto Nazionale di Geofisica e Vulcanologia-Sezione di Pisa, Turin, Pisa, ItalyItaly;

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  • 正文语种 eng
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  • 关键词

    Laser radar; Surface morphology; Surface treatment; Surface reconstruction; Spatial resolution; Geology; Atmospheric modeling;

    机译：激光雷达;表面形态;表面处理;表面重建;空间分辨率;地质;大气模拟;

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