Results 21 to 30 of about 13,814,223 (289)
PRECISE AERIAL IMAGE ORIENTATION USING SAR GROUND CONTROL POINTS FOR MAPPING OF URBAN LANDMARKS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019 Highly precise ground control points, which are globally available, can be derived from the SAR satellite TerraSAR-X. This opens up many new applications like for example the precise aerial image orientation.
F. Kurz +4 more
doaj +3 more sources
Remote Sensing, 2018 The geometrical accuracy of georeferenced digital surface models (DTM) obtained from images captured by micro-UAVs and processed by using structure from motion (SfM) photogrammetry depends on several factors, including flight design, camera quality ...
Enoc Sanz-Ablanedo +3 more
doaj +3 more sources
Automated Ground Control Point Identification using Deep Learning Techniques [PDF]
VGC 2023 - Unveiling the dynamic Earth with digital methods : 5th Virtual Geoscience Conference ; Book of Abstracts, 2023 Ground Control Points (GCPs) play a crucial role in photogrammetry, providing essential information for georeferencing, registration and scaling of aerial and satellite imagery. These reference points, with known coordinates, are strategically placed and precisely measured on the ground to achieve accurate georeferencing in the photogrammetric process.
Blanch Gorriz, Xabier +5 more
openaire +4 more sources
PRECISION OF VISUAL LOCALIZATION USING DYNAMIC GROUND CONTROL POINTS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020 Localization is one of the first steps in navigation. Especially due to the rapid development in automated driving, a precise and reliable localization becomes essential.
P. Trusheim, C. Heipke
doaj +1 more source
Data, 2021 A new ground truth dataset generated with high-accuracy Global Navigation Satellite Systems (GNSS) positional data of the invasive reed Phragmites australis subsp. australis within Îles-de-Boucherville National Park (Quebec, Canada) is described.
Kathryn Elmer, Margaret Kalacska
doaj +1 more source
Examining the impact of Ground Control point quantity on the geometric accuracy of UAV photogrammetric products formed using Structure-from-Motion approach [PDF]
Tehnika, 2023 The positional and vertical accuracy of UAV aerial photogrammetry products generated using the Structure from Motion (SfM) approach depends on various factors, such as flight plan parameters, camera quality, camera calibration, the SfM algorithm used ...
Nikolić Ratko R. +2 more
doaj +1 more source
Set-point Control for a Ground-based Reconfigurable Robot
2022 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2022 Reconfigurable mobile robots are well suited for inspection tasks in legacy nuclear facilities where access is restricted and the environment is often cluttered. A reconfigurable snake robot, MIRRAX, has previously been developed to investigate such facilities.
Wei Cheah +3 more
openaire +4 more sources
Influence of the shape and size of the ground targets on the accuracy of photogrammetric processing
RUDN Journal of Ecology and Life Safety, 2020 The materials obtained from the unmanned aerial vehicle (UAV) are used to solve many problems, including large-scale mapping and monitoring of linear objects, as well as the ecological situation and monitoring of emergency situations.
Amr Elsheshtawy +3 more
doaj +1 more source
MULTI-GNSS PPP: An Alternative Positioning Technique for Establishing Ground Control Points
International Journal of Environment and Geoinformatics, 2020 Traditionally, ground control points (GCPs) are utilized to determine absolute image orientations indirectly in aerial triangulation. For a long time, differential and relative GNSS (Global Navigation Satellite System) positioning techniques have been ...
Berkay Bahadur, Metin Nohutçu
doaj +1 more source
Selection of the most suitable sizes of ground control points in the satellite images
, 2004 Nowadays, satellite images have been used for many applications intensively. Using of the digital satellite images in relevant approaches may give more accurate ideas about the researched fields. Besides, different methods could be used for derivation of maps from relevant digital data in many scientific disciplines.
Yılmaz H.M. +3 more
openaire +3 more sources