Results 71 to 80 of about 294,690 (247)
CHARM-F: The Airborne Integral Path Differential Absorption Lidar for Simultaneous Measurements of Atmospheric CO2 and CH4 [PDF]
, 2010 CHARM-F (CO2 and CH4 Atmospheric Remote Monitoring – Flugzeug) is DLR’s airborne Integral Path Differential Absorption lidar for simultaneous measurements of the column weighted-average dry-air mixing ratios of atmospheric carbon dioxide and methane ...
Schweyer, Sebastian +11 more
core
Carbon Balance and Management, 2016 Background Monitoring and managing carbon stocks in forested ecosystems requires accurate and repeatable quantification of the spatial distribution of wood volume at landscape to regional scales.
Shaun R. Levick +2 more
doaj +1 more source
A validated 3D point‐cloud analysis workflow for the creation of seagrass canopy height models
Methods in Ecology and Evolution, EarlyView.Abstract Seagrasses support highly productive ecosystems in both temperate and tropical waters and provide essential ecosystem services. Despite their importance, the vertical structure of seagrasses (i.e. the canopy) remains poorly characterised at the microscale, even though it is a strong predictor of ecological processes that influence both ...
Daniele Ventura
wiley +1 more source
Airborne water vapour and wind lidar measurements of latent heat fluxes during COPS 2007 [PDF]
, 2010 During the Convective and Orographically-induced Precipitation Study (COPS) in July 2007 over the Black Forest Mountains in south-western Germany, tropospheric profiles of water vapour and wind were measured with a differential absorption lidar (DIAL ...
Kiemle, Christoph +3 more
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Methods in Ecology and Evolution, EarlyView.Abstract Tree crowns are complex, three‐dimensional structures whose morphology varies among species, individuals and environments. Although light detection and ranging (LiDAR) provides high‐resolution, single‐tree point clouds that advance species discrimination and the assessment of intraspecific variation in situ, crown shape is still commonly ...
Ladislav Hodač +5 more
wiley +1 more source
A Survey of Methods for Constructing 3D Urban Models From Point Clouds
Computer Graphics Forum, EarlyView.The survey outlines a general process for constructing 3D models from point clouds and categorizes the methods based on their use of templates, basic surface primitives, hybrid approaches, or linear primitives. Additionally, the survey reviews the datasets and benchmarks that are essential for testing and training the developed methods.
Chiara Romanengo +5 more
wiley +1 more source
Development and Application of an airborne Differential Absorption Lidar for the Simultaneous Measurement of Ozone and Water Vapor in the Tropopause Region [PDF]
, 2012 A new, combined, lidar system has been developed that is able to simultaneously measure profiles of ozone and water vapor onboard of a comparatively small aircraft.
Fix, Andreas +3 more
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Design and implementation of points position cloud calculation based on software-hardware co-design
Dianzi Jishu Yingyong, 2019 Airborne lidar has a wide range of applications in mapping, exploration and so on. Its data processing uses the ranging data of LiDAR and the position and orientation information to obtain high precision surface models.
He Ruibin +4 more
doaj +1 more source
TYPICAL APPLICATIONS OF AIRBORNE LIDAR TECHNOLAGY IN GEOLOGICAL INVESTIGATION [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 The technology of airborne light detection and ranging (LiDAR), also referred to as Airborne Laser Scanning, is widely used for high-resolution topographic data acquisition (even under forest cover) with sub-meter planimetric and vertical accuracy.
X. Zheng, C. Xiao
doaj +1 more source
TreeON: Reconstructing 3D Tree Point Clouds from Orthophotos and Heightmaps
Computer Graphics Forum, EarlyView.Abstract We present TreeON, a novel neural‐based framework for reconstructing detailed 3D tree point clouds from sparse top‐down geodata, using only a single orthophoto and its corresponding Digital Surface Model (DSM). Our method introduces a new training supervision strategy that combines both geometric supervision and a differentiable shadow and ...
Angeliki Grammatikaki +4 more
wiley +1 more source