Results 91 to 100 of about 23,753 (298)

A landslide monitoring method using data from unmanned aerial vehicle and terrestrial laser scanning with insufficient and inaccurate ground control points

Journal of Rock Mechanics and Geotechnical Engineering
Non-contact remote sensing techniques, such as terrestrial laser scanning (TLS) and unmanned aerial vehicle (UAV) photogrammetry, have been globally applied for landslide monitoring in high and steep mountainous areas.
Jiawen Zhou, Nan Jiang, Congjiang Li, Haibo Li   +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

Determining the Optimal Number of Ground Control Points for Varying Study Sites through Accuracy Evaluation of Unmanned Aerial System-Based 3D Point Clouds and Digital Surface Models

Drones, 2020
The rapid development of drone technologies, such as unmanned aerial systems (UASs) and unmanned aerial vehicles (UAVs), has led to the widespread application of three-dimensional (3D) point clouds and digital surface models (DSMs).
J. Yu, Dongwoo Kim, Eun Jung Lee, S. Son
semanticscholar   +1 more source

Meander‐Bend Erosion Dynamics Along a Gravel‐Bed River: Insights From Short‐Term UAV Monitoring

River Research and Applications, EarlyView.
ABSTRACT Riverbank erosion is a natural process in meandering rivers that contributes to sediment supply and geomorphic diversity, yet it can threaten infrastructure and human activities within the floodplain. Recently, many studies have used high‐resolution remote sensing technologies to measure bank erosion, but they often focus on technical aspects ...
Katarina Pavlek, Mateo Gašparović, Tomáš Galia   +2 more
wiley   +1 more source

EVALUATION OF ASTER GDEM V3 USING ICESAT LASER ALTIMETRY [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
We have used a set of Ground Control Points (GCPs) derived from altimetry measurements from the Ice, Cloud and land Elevation Satellite (ICESat) to evaluate the quality of the 30 m posting ASTER (Advanced Spaceborne Thermal Emission and Reflection ...
C. C. Carabajal, J.-P. Boy
doaj   +1 more source

Digitalisasi Pemetaan Topografi menggunakan Alat Drone serta Perhitungan Ketelitian dengan Ground Control Point (Gcp)

Jurnal Teknik Sipil Terapan
Perkembangan teknologi telah mendorong penggunaan drone untuk pemetaan topografi yang hemat biaya dan waktu. Pada penelitian yang dilakukan di area pengembangan perumahan Citraland Winangun, dilakukan penentuan kondisi topografi dan keakuratan proses pemetaan menggunakan drone dengan Ground Control Point (GCP).
Anastasya G.O Piyoh, I Gede Yohan Kafrain, Fenny Moniaga   +2 more
openaire   +1 more source

Decomposing Dual Scale Soil Surface Roughness for Microwave Remote Sensing Applications [PDF]

, 2012
Soil surface roughness, as investigated in this study, is decomposed in a dual scale process. Therefore, we investigated photogrammetrically acquired roughness information over different agricultural fields in the size of 6-22 m(2) and decomposed them ...
Aguilar, Alvarez-Mozos, Blaes, Callens, Chandler, Davidson, Davidson, Heng, Lievens, Linder, Marzahn, Marzahn, Mattia, Mattia, Moritz Seidel, Philip Marzahn, Ralf Ludwig, Rieke-Zapp, Rieke-Zapp, Rieke-Zapp, Roemkens, Shin, Taconet, Ulaby, Verhoest, Warner, Webster, Wegmuller, Zribi, Zribi   +29 more
core   +2 more sources

Using time‐series remote sensing to identify and track individual bird nests at large scales

Remote Sensing in Ecology and Conservation, EarlyView.
Time‐series airborne imagery can potentially track individuals over time to collect information beyond one‐off counts. Using weekly UAS‐based imagery of wading bird colonies, we develop an automated approach to identifying nests. Our algorithmic approach detected 68–74% of known nests and exhibited similar performance to human review of imagery ...
S. K. Morgan Ernest, Lindsey A. Garner, Ben G. Weinstein, Peter Frederick, Henry Senyondo, Glenda M. Yenni, Ethan P. White   +6 more
wiley   +1 more source

Deep learning‐based super‐resolution reconstruction and improved YOLOv9 for efficient benthos detection: a case study at Lake Hamana, Japan

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents a UAV‐based framework that integrates deep learning‐based super‐resolution reconstruction and an enhanced YOLO detector to improve centimetre‐scale benthic organism monitoring. Using hermit crabs in Lake Hamana, a coastal lagoon in Japan, as a case study, the method substantially enhanced small‐object detection performance ...
Fan Zhao, Bangzhang Ma, Dianhan Xi, Jiaqi Wang, Yijia Chen, Yongying Liu, Xinlei Shao, Mowen Zhang, Guocheng Zhang, Jundong Chen, Katsunori Mizuno   +10 more
wiley   +1 more source

Evaluating the Effectiveness of ICESat-2 ATL03 Data for Georeferencing Satellite Images [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
ICESat-2 laser points, as a kind of public geographic data, have high ranging accuracy and have great potential in improving the geometric positioning accuracies of satellite images.
H. Li, W. Qin, D. Zhou, Q. Jing, X. Zhang, P. Tao, P. Tao   +6 more
doaj   +1 more source