Results 31 to 40 of about 55,303,286 (181)

INCORRECT MATCH DETECTION METHOD FOR ARCTIC SEA-ICE RECONSTRUCTION USING UAV IMAGES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Shapes and surface roughness, which are considered as key indicators in understanding Arctic sea-ice, can be measured from the digital surface model (DSM) of the target area.
J.-I. Kim, H.-C. Kim
doaj   +1 more source

Urban Feature Extraction from Merged Airborne LiDAR Data and Digital Camera Data

open access: yesGeoplanning: Journal of Geomatics and Planning, 2020
Until recently, the most highly accurate digital surface models were obtained from airborne lidar. With the development of a new generation of large format digital photogrammetric aerial camera, a fully digital photogrammetric workflow became possible ...
Lamyaa Gamal EL-Deen Taha   +3 more
doaj   +1 more source

Extraction of the discontinuity orientation from a digital surface model

open access: yesShuiwen dizhi gongcheng dizhi, 2022
The traditional field contact measurement for obtaining parameters of the rock mass discontinuity is of low efficiency and big workload, and the accuracy of the results are affected by human factors.
Chengqiang XUAN   +2 more
doaj   +1 more source

Generation of Digital Surface Model (DSM) USING UAV/ QUADCOPTER

open access: yesInternational Journal of Innovations in Science and Technology, 2020
Satellite imageries are being used as primary source of information due to their vast coverage and high temporal resolution. Unnamed Aerial Vehicle (UAV) is being used these days because of its accuracy, autonomous flights, cost effectiveness and rapid overview of data.
Huma Ahmed Hassan   +5 more
openaire   +1 more source

Comparison between image- and surface-derived displacement fields for landslide monitoring using an unmanned aerial vehicle

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2023
The traditional particle image velocimetry technique generates a 2D displacement field for landslide monitoring using multi-temporal unmanned aerial vehicle (UAV) orthoimages.
Tee-Ann Teo   +4 more
doaj   +1 more source

Applicability of Data Acquisition Characteristics to the Identification of Local Artefacts in Global Digital Elevation Models: Comparison of the Copernicus and TanDEM-X DEMs

open access: yesRemote Sensing, 2021
Several global digital elevation models (DEMs) have been developed in the last two decades. The most recent addition to the family of global DEMs is the TanDEM-X DEM.
Jana Marešová   +7 more
doaj   +1 more source

DSM Extraction Based on Gaofen-6 Satellite High-Resolution Cross-Track Images with Wide Field of View

open access: yesSensors, 2023
Digital Surface Model (DSM) is a three-dimensional model presenting the elevation of the Earth’s surface, which can be obtained by the along-track or cross-track stereo images of optical satellites. This paper investigates the DSM extraction method using
Suqin Yin   +5 more
doaj   +1 more source

Analysing Maize Plant Height Using Unmanned Aerial Vehicle (UAV) RGB based on Digital Surface Models (DSM)

open access: yesIOP Conference Series: Earth and Environmental Science, 2023
Abstract Maize (Zea mays L.) is one of the essential agricultural products in Papua Province of Indonesia, specifically in the three largest maize producing regions, namely Nabire Regency, Biak Numfor Regency and Merauke Regency, with the number of productions of 991 tons, 764 tons, and 751 tons respectively in 2015. Unfortunately, since
Sri Murniani Angelina Letsoin   +3 more
openaire   +1 more source

Impact of flight altitude and cover orientation on Digital Surface Model (DSM) accuracy for flood damage assessment in Murcia (Spain) using a fixed-wing UAV [PDF]

open access: yesEarth Science Informatics, 2020
AbstractSoil erosion, rapid geomorphological change and vegetation degradation are major threats to the human and natural environment. Unmanned Aerial Systems (UAS) can be used as tools to provide detailed and accurate estimations of landscape change. The effect of flight strategy on the accuracy of UAS image data products, typically a digital surface ...
Niels S. Anders   +5 more
openaire   +5 more sources

STATE OF THE ART IN DIGITAL SURFACE MODELLING FROM MULTI-VIEW HIGH-RESOLUTION SATELLITE IMAGES [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Data from the optical satellite imaging sensors running 24/7, is collecting in embarrassing abundance nowadays. Besides more suitable for large-scale mapping, multi-view high-resolution satellite images (HRSI) are cheaper when comparing to Light ...
Y. Han   +5 more
doaj   +1 more source

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