Results 151 to 160 of about 2,580 (187)
Use of UAV-Photogrammetry for Quasi-Vertical Wall Surveying [PDF]
Remote Sensing, 2020 In this study, an analysis of the capabilities of unmanned aerial vehicle (UAV) photogrammetry to obtain point clouds from areas with a near-vertical inclination was carried out. For this purpose, 18 different combinations were proposed, varying the number of ground control points (GCPs), the adequacy (or not) of the distribution of GCPs, and the ...
Patricio Martínez-Carricondo +2 more
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The Influence of Redundant Images in Uav Photogrammetry Application
IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018Today, UAV (Unmade Aerial Vehicle) platforms are increasingly being used to acquire low cost high resolution digital images to extract geoinformation datasets by Photogrammetry and Remote Sensing approaches. This paper shows a study that was performed to verify the influence of redundant images in the extraction of 3D point cloud using a UAV image ...
Edson Aparecido Mitishita +1 more
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Brazilian Savanna Height Estimation Using UAV Photogrammetry
2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021Unmanned aerial vehicles (UAVs) have been advancing in precision and cost-benefit for remote sensing studies, including height and biomass estimations. This article presents a preliminary experiment to explore UAV photogrammetry to estimate canopy height in savanna and grassland phytophysiognomies in the Brazilian Cerrado biome.
Andeise Cerqueira Dutra +7 more
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UAV photogrammetry for archaeological survey: The Theaters area of Pompeii
2013 Digital Heritage International Congress (DigitalHeritage), 2013Aerial surveying is, in the domain of archeology and architecture, an exponential field of application and interest. Beyond the increasing flying capabilities and skills of existing UAV, the operational potentiality of the aircraft oversteps the imagination of their own creators.
Saleri, Renato +6 more
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Dominant Trees Analysis Using UAV LiDAR and Photogrammetry
IGARSS 2020 - 2020 IEEE International Geoscience and Remote Sensing Symposium, 2020Dominant trees compose the upper story of forest canopies, and are one of the key factors that affect the light redistribution for forest ecosystem. UAV lidar and photogrammetry can be used to measure spatial variation of upper crowns of dominant trees with details.
Qingwang Liu +3 more
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The surface modelling based on UAV Photogrammetry and qualitative estimation
Measurement: Journal of the International Measurement Confederation, 2015Abstract Recently, the interest in Unmanned Aerial Vehicle (UAV) application in photogrammetric environment has increased in many countries. The fixed-wing UAV, the model of EPP-FPV with mounted digital camera Canon S100 was used as a platform for images acquisition. Implemented means are low-cost, mobile and simple. Digital photogrammetry technology
Birute Ruzgiene
exaly +3 more sources
An approach of system calibration for UAV photogrammetry
SPIE Proceedings, 2011As a kind of photogrammetric platform unmanned aerial vehicles (UAVs) usually employ amateur digital cameras, the photogrammetric data availability depend on the integrated sensors calibration result and the flight performance, which are great limitations to the UAV systems used in aerial photogrammetry. In this work, a specific workflow for the UAV
Ping Liu, Xi Chen, Liao Yang
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DEM Generation Based On UAV Photogrammetry
2019 International Conference on Advanced Electrical Engineering (ICAEE), 2019The aim of this paper is to examine the use of free open source software like WebODM and GRASS GIS for generating cost effective Digital Elevation Models from aerial images captured during UAV flights. The outcome of the study shows that it is possible to use the UAV photogrammetry data for producing maps that compensate all of low-cost, time ...
Adel MOKRANE +2 more
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The Particularity of Aerial Photogrammetry for Architectural Heritages by UAV
2012 2nd International Conference on Remote Sensing, Environment and Transportation Engineering, 2012Aerial photogrammetry on unmanned helicopter platform is a critical technology for architectural heritages recording. The complexity of architectural heritages determines the particularity of aerial photogrammetry works. This paper analyzes this particularity in several aspects with a classic documentation.
Yan Li, Zhe Li, Ying Song
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