Results 11 to 20 of about 647 (152)

Georeferencing experiments with UAS imagery [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
Comparing typical airborne mapping systems with Unmanned Airborne Systems (UAS) developed for mapping purposes, there are several advantages and disadvantages of both systems.
G. Jóźków, C. Toth
doaj   +2 more sources

GEOREFERENCING ACCURACY ANALYSIS OF A SINGLE WORLDVIEW-3 IMAGE COLLECTED OVER MILAN [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
The use of rational functions has become a standard for very high-resolution satellite imagery (VHRSI). On the other hand, the overall geolocalization accuracy via direct georeferencing from on board navigation components is much worse than image ground ...
L. Barazzetti   +3 more
doaj   +3 more sources

Determining the Suitable Number of Ground Control Points for UAS Images Georeferencing by Varying Number and Spatial Distribution

open access: yesRemote Sensing, 2020
Currently, products that are obtained by Unmanned Aerial Systems (UAS) image processing based on structure-from-motion photogrammetry (SfM) are being investigated for use in high precision projects.
Valeria-Ersilia Oniga   +3 more
doaj   +3 more sources

ANALYZING OF THE TERRESTRIAL LASER SCANNER GEOREFERENCING USING GNSS

open access: yesMağallaẗ Al-kūfaẗ Al-handasiyyaẗ, 2018
Recent years have witnessed emerging the cutting-edge method for point cloud creation using terrestrial laser scanner (TLS). The TLS manufacturers declare accuracies of their instruments up to the millimeter level.
Hasan A. Jaafar
doaj   +2 more sources

QUALITY ASSESSMENT OF COMBINED IMU/GNSS DATA FOR DIRECT GEOREFERENCING IN THE CONTEXT OF UAV-BASED MAPPING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Within the past years, the development of high-quality Inertial Measurement Units (IMU) and GNSS technology and dedicated RTK (Real Time Kinematic) and PPK (Post-Processing Kinematic) solutions for UAVs promise accurate measurements of the exterior ...
C. Stöcker, F. Nex, M. Koeva, M. Gerke
doaj   +2 more sources

ERROR ANALYSIS FOR THE AIRBORNE DIRECT GEOREFERINCING TECHNIQUE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Direct Georeferencing was shown to be an important alternative to standard indirect image orientation using classical or GPS-supported aerial triangulation.
A. S. Elsharkawy, A. F. Habib
doaj   +2 more sources

Drones and Real-Time Kinematic Base Station Integration for Documenting Inaccessible Ruins: A Case Study Approach [PDF]

open access: yesDrones
Ruins, marked by decay and abandonment, present challenges for digital documentation due to their varied conditions and remote locations. Surveying inaccessible ruins demands innovative approaches for safety and accuracy.
Daniele Treccani   +2 more
doaj   +2 more sources

Development and Evaluation of a UAV-Photogrammetry System for Precise 3D Environmental Modeling

open access: yesSensors, 2015
The specific requirements of UAV-photogrammetry necessitate particular solutions for system development, which have mostly been ignored or not assessed adequately in recent studies.
Mozhdeh Shahbazi   +3 more
doaj   +2 more sources

Canine Leishmaniasis in Rio de Janeiro, Brazil (2000-2015): Taxonomic Characterisation of Etiological Agents and Geospatial Case Analysis. [PDF]

open access: yesZoonoses Public Health
ABSTRACT Introduction Canine Leishmaniasis is a vector‐borne zoonotic disease caused by several species of protozoa of the genus Leishmania. In the state of Rio de Janeiro (RJ), Leishmania braziliensis is the most prevalent species causing tegumentary leishmaniasis (TL) and Leishmania infantum is the main causative agent of visceral leishmaniasis (VL).
Miranda LFC   +10 more
europepmc   +2 more sources

PPK PROCESSING TO BOOST UAS ACCURACY IN CADASTRAL MAPPING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
Unmanned Aerial Systems (UAS) are increasingly used in different applications, including 3D urban modelling, cadastral mapping, urban planning, GIS information system and other fields because of their advantages.
V. E. Oniga   +8 more
doaj   +1 more source

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