Results 21 to 30 of about 12,614,375 (254)
Optimization of Number of GCPs and Placement Strategy for UAV-Based Orthophoto Production
Applied SciencesUnmanned aerial vehicles (UAVs) have been employed to perform aerial surveys in many industries owing to their versatility, relatively low cost, and efficiency.
Dong-Min Seo +4 more
doaj +3 more sources
ASSESSING THE VIABILITY OF PPK TECHNIQUES FOR ACCURATE MAPPING WITH UAS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023 Utilizing ground control points (GCPs) to georeference photogrammetry-based point cloud data is a common practice in unmanned aerial system (UAS) mapping.
R. Tamimi, C. Toth
doaj +1 more source
IOP Conference Series: Earth and Environmental Science, 2023 Abstract This study presents data measurements to identify the best navigation system in terms of its positioning accuracy. The data global positioning system measurements is done using a GPS South device measured in four locations which are one random point and three different places based on the Ground Control Points (GCP) in ...
K Suhaimi, N M Sahar, K Badron
openaire +1 more source
COMPARING ACCURACY OF ULTRA-DENSE LASER SCANNER AND PHOTOGRAMMETRY POINT CLOUDS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 Massive point clouds have now become a common product from surveys using passive (photogrammetry) or active (laser scanning) technologies. A common question is what is the difference in terms of accuracy and precision of different technologies and ...
F. Pirotti +7 more
doaj +1 more source
Optimization of Ground Control Point (GCP) and Independent Control Point (ICP) on Orthorectification of High Resolution Satellite Imagery [PDF]
E3S Web of Conferences, 2019 In the rapidly evolving technology era, various survey methods have been widely used one of them by remote sensing using satellite. It is known that the satellite image recording process is covered by rides (satellites) moving over the Earth's surface at hundreds of kilometers, causing satellite imagery to have geometric distortion.
Hariyanto Teguh +3 more
openaire +2 more sources
MULTI-SCALE MATCHING FOR THE AUTOMATIC LOCATION OF CONTROL POINTS IN LARGE SCALE AERIAL IMAGES USING TERRESTRIAL SCENES [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014 A technique to automatically locate Ground Control Points (GCPs) in large aerial images is presented considering the availability of low accuracy direct georeferencing data. The approach is based on image chips of GCPs extracted from vertical terrestrial
A. Berveglieri, A. M. G. Tommaselli
doaj +1 more source
Drones, 2020 Unmanned Aerial Vehicles (UAVs) have revolutionised the availability of high resolution topographic data in many disciplines due to their relatively low-cost and ease of deployment.
Eilidh Stott +2 more
doaj +1 more source
Ground Control Points (GCPs) for Mangrove and Nipa Palm Classification in the Niger Delta
, 2022 GCPs were established by collecting GPS coordinates of 6 land cover types (Mangrove Forests, Nipa palm, Inland forests, Surface water, Built regions and Agricultural land) over the Niger Delta.
Nwobi, Chukwuebuka +1 more
core +2 more sources
GNSS Accuracy Analysis for Efficiency of Ground Control Point (GCP) Measurement
International Journal on Advanced Science, Engineering and Information Technology, 2020 Nowadays, the Global Navigation Satellite System (GNSS) has a significant role in the field of surveying and mapping, especially in determining the coordinates of ground control points for rectifying aerial photography, satellite imagery and airborne lidar.
- Khomsin +2 more
openaire +1 more source
Fagradalsfjall (Iceland) 2021 Eruption Ground Control Points (GCPs)
, 2022 This item contains the names and location of Ground Control Points (GCPs) used to georeference UAS surveys conducted during the 2021‒2022 eruption Fagradalsfjall eruption in Iceland.
Michael Steven Christoffersen (10063615) +8 more
core +1 more source