- Tytuł:
- Unmanned Aerial Vehicles for Three‑dimensional Mapping and Change Detection Analysis
- Autorzy:
-
Gbopa, Adetola Olufunmilayo
Ayodele, Emmanuel Gbenga
Okolie, Chukwuma John
Ajayi, Akinwumi Olaitan
Iheaturu, Chima Jude - Powiązania:
- https://bibliotekanauki.pl/articles/1838008.pdf
- Data publikacji:
- 2021
- Wydawca:
- Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
- Tematy:
-
UAV technology
3D mapping
orthophoto
land cover
change detection analysis - Opis:
- Unmanned Aerial Vehicles (UAVs), commonly known as drones are increasingly being used for three dimensional (3D) mapping of the environment. This study utilised UAV technology to produce a revised 3D map of the University of Lagos as well as land cover change detection analysis. A DJI Phantom 4 UAV was used to collect digital images at a flying height of 90 m, and 75% fore and 65% side overlaps. Ground control points (GCPs) for orthophoto rectification were coordinated with a Trimble R8 Global Navigation Satellite System. Pix4D Mapper was used to produce a digital terrain model and an orthophoto at a ground sampling distance of 4.36 cm. The change detection analysis, using the 2015 base map as reference, revealed a significant change in the land cover such as an increase of 16,306.7 m2 in buildings between 2015 and 2019. The root mean square error analysis performed using 7 GCPs showed a horizontal and vertical accuracy of 0.183 m and 0.157 m respectively. This suggests a high level of accuracy, which is adequate for 3D mapping and change detection analysis at a sustainable cost.
- Źródło:
-
Geomatics and Environmental Engineering; 2021, 15, 1; 41-61
1898-1135 - Pojawia się w:
- Geomatics and Environmental Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł