Results 251 to 260 of about 23,753 (298)

Assessment of UAV-based digital surface model and the effects of quantity and distribution of ground control points

, 2021
The development of unmanned aerial vehicles (UAVs) along with that of positioning and imaging sensors has promoted the use of photogrammetric techniques for applications other than the conventional acquisition of the Earth’s surface information. Moreover,
Guilherme Gomes Pessoa, André Caceres Carrilho, Gabriela Takahashi Miyoshi, Amilton Amorim, M. Galo   +4 more
semanticscholar   +1 more source

Evaluation of ASTER GDEM2, SRTMv3.0, ALOS AW3D30 and TanDEM-X DEMs for the Peruvian Andes against highly accurate GNSS ground control points and geomorphological-hydrological metrics

, 2020
We present an analysis for Peru of the vertical accuracy and derived geomorphological parameters of three, freely available Digital Elevation Models (DEMs) with 30-m grid sizes and one commercially available 12-m DEM: ASTER GDEM2, SRTMv3.0 (hereafter ...
M. R. González-Moradas, M. R. González-Moradas, W. Viveen   +2 more
semanticscholar   +1 more source

Ground control points refresh for MODIS and VIIRS geolocation monitoring

Optical Engineering + Applications, 2021
The Control Point Matching(CPM) program and a set of over 1200 globally distributed ground control points (GCPs ) have been successfully used to develop more than 20 years of MODIS geolocation products.
Ping Zhang, G. Lin, B. Tan, R. Wolfe
semanticscholar   +1 more source

The Effect of Ground Control Points Located on Roofs on Building Facade Accuracy

International Journal of Engineering and Geosciences
The popularity of Unmanned Aerial Vehicle (UAV) photogrammetry is growing worldwide due to its low-cost advantage in collecting high-resolution 3D topographic models.
Hasan Dilmaç, Veli Ilçi, Nazime Tilbe Şaşmaz, I. M. Ozulu   +3 more
semanticscholar   +1 more source

Influences of the Ground Control Point (GCP) configuration on the UAV-derived Structure from Motion (SfM) in the coastal environment

Earth Science Informatics
Marco Luppichini, Marco Paterni, Andrea Berton, Nicola Casarosa, Monica Bini   +4 more
openaire   +2 more sources

Standardization of the Shape of Ground Control Point (GCP) and the Methodology for Its Detection in Images for UAV-Based Mapping Applications

2019
The challenge of georeferencing aerial images for an accurate object to image correspondence has gained significance over the past couple of years. There is an ever-increasing need to establish accurate georeferencing techniques for Unmanned Aerial Vehicles (UAVs) for tasks like aerial surveyance of mines/construction sites, change detection along ...
Aman Jain, Milind Mahajan, Radha Saraf
openaire   +1 more source

Assessing the accuracy of river channel bathymetry measurements using an RTK rotary-winged Unmanned Aerial Vehicle (UAV) with varying Ground Control Point (GCP) number and placement

2020
<p>Previous studies have established the ability to map river channel bathymetry accurately in clear water, shallow wadeable streams using imagery from Unmanned Aerial Vehicles (UAVs), Structure-from-Motion (SfM) photogrammetry and the application of refraction correction.
Ian Maddock, Josie Lynch
openaire   +1 more source

Vertical Accuracy Assessment of 20-metre SPOT DEM using Ground Control Points from Lagos and FCT, Nigeria

Journal of Engineering Research, 2020
Digital Elevation Models (DEMs) are one of the most commonly used datasets for representing variations in terrain elevation. Technological advancements in satellite remote sensing have led to the proliferation of digital elevation datasets with near ...
P. Nwilo, C. Okolie, J. Onyegbula, O. Abolaji, M. J. Orji, O. Daramola, I. Arungwa   +6 more
semanticscholar   +1 more source

Pemetaan Topografi Di Wilayah Perumahan Griya Paniki Indah Dengan Menggunakan Fotogrametri Serta Perbandingan Ketelitian Akurasi Dengan Ground Control Point (GCP)

2022
Pemetaan Fotogrametri/Unmanned Aerial Vehicle (UAV) merupakan pemetaan yang dapat menjelajah ke wilayah yang cukup luas dalam waktu yang relafif singkat, sehingga menjadikan drone adalah alternatif yang efektif, murah dan aman apabila dimanfaatkan untuk memetakan wilayah dibandingkan menggunakan metode konvensional lainnya.
Kembuan, Geraldo J. F., Pandey, Sisca V., Lefrandt, Lucia I. R.   +2 more
openaire   +1 more source

Influence of quantity, quality, horizontal and vertical distribution of ground control points on the positional accuracy of UAV survey

Applied Geomatics, 2023
Dharshan Shylesh D S, M. N, S. S, S. D, Jaganathan R, M. G.   +5 more
semanticscholar   +1 more source