Results 71 to 80 of about 12,614,375 (254)

Accuracy Assessment of a UAV Direct Georeferencing Method and Impact of the Configuration of Ground Control Points

Drones, 2022
Unmanned aerial vehicles (UAVs) can obtain high-resolution topography data flexibly and efficiently at low cost. However, the georeferencing process involves the use of ground control points (GCPs), which limits time and cost effectiveness.
Xiaoyu Liu, Xugang Lian, Wenfu Yang, Fan Wang, Yu Han, Yafei Zhang   +5 more
doaj   +1 more source

A weighted least squares solution for space intersection of spaceborne stereo SAR data [PDF]

, 2001
The use of stereoscopic SAR images offers an alternative to interferometric SAR for the generation of digital elevation models (DEMs). The stereo radargrammetric method is robust and can generate DEMs of sufficient accuracy to geocode SAR images ...
Dowman, I.J., Ian J. Dowman, Pu-huai Chen, Chen, P.-H.   +3 more
core  

Table1_Using existing infrastructure as ground control points to support citizen science coastal UAS monitoring programs.docx

, 2023
Recent publications have described the ability of citizen scientists to conduct unoccupied aerial system (UAS) flights to collect data for coastal management.
Lucas F. Rabins (14819161), Ethan J. Theuerkauf (3779899), Erin L. Bunting (14819164)   +2 more
core   +1 more source

Advances in Design Strategy and Mechanism Insights for Alkaline Hydrogen Evolution Reaction: Multilevel Site Engineering and Structure–Activity Relationship

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This review is about material design based on engineering multilevel sites from theoretical calculation and synthetic routes to mechanism, structure–activity relationship, challenges and perspectives for boosting hydrogen production in alkaline electrolyte. Electrolytic water splitting is a clean, carbon‐free method for producing green hydrogen and has
Ke Zhang, Hongying Luo, Yudong Du, Kehao Yu, Huayu Wu, Shimin Chai, Yanyan Liu, Yongfeng Wang, Jianchun Jiang, Baojun Li   +9 more
wiley   +1 more source

Accuracy assessment of RTK/PPK UAV-photogrammetry projects using differential corrections from multiple GNSS fixed base stations

Geocarto International, 2023
Unmanned aerial vehicles (UAVs) equipped with global navigation satellite system-real-time kinematic (GNSS RTK) receivers allow direct georeferencing of the photogrammetric project without using ground control points (GCPs).
Patricio Martínez-Carricondo, Francisco Agüera-Vega, Fernando Carvajal-Ramírez   +2 more
doaj   +1 more source

Real world testing and cost‐effectiveness analysis of subcutaneous EEG (REAL‐ASE): Protocol for a prospective multicentre interventional trial

Epilepsia Open, EarlyView.
Abstract Objective Epilepsy is a common condition associated with significant morbidity, mortality, and costs. Poor documentation of seizures is a major challenge in epilepsy care. Objective seizure counting with mobile devices may mitigate this challenge and improve patient management.
Matthew McWilliam, Pedro F. Viana, Eren Dursun, Joe Davies, Joel S. Winston, Jessica Agren, Harutomo Hasegawa, Jonas Duun‐Henriksen, Mark P. Richardson   +8 more
wiley   +1 more source

Accuracy Analysis of a Dam Model from Drone Surveys

Sensors, 2017
This paper investigates the accuracy of models obtained by drone surveys. To this end, this work analyzes how the placement of ground control points (GCPs) used to georeference the dense point cloud of a dam affects the resulting three-dimensional (3D ...
Elena Ridolfi, Giulia Buffi, Sara Venturi, Piergiorgio Manciola   +3 more
doaj   +1 more source

Fenfluramine in Rett syndrome: A multidimensional clinical study

Epilepsia Open, EarlyView.
Abstract Objective Rett syndrome (RTT) is a severe neurodevelopmental disorder frequently associated with drug‐resistant epilepsy, autonomic dysfunction, respiratory abnormalities, sleep disturbances, and behavioral impairment. Fenfluramine has shown efficacy in developmental and epileptic encephalopathies and may provide broader therapeutic benefits ...
Elena Gonzalez‐Alguacil, Nuria Lamagrande Casanova, Manuel Luján Bonete, David Mansilla Lozano, Juan José García Peñas, María Ballará Petitbó, Rocío Trincado Lamuño, Verónica Cantarín‐Extremera, Raquel Díaz Conejo, César Rodríguez Sánchez, Adrián García Ron, Víctor Soto Insuga   +11 more
wiley   +1 more source

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

The Influence of Ground Control Points (GCPs) for Digital Elevation Models (DEMs) Using UAVs

Unmanned aerial vehicles are a modern technology for collecting data for aerial surveying to produce high-resolution digital elevation models (DEMs). This accuracy is achieved using ground control points (GCPs), which are specific locations on the ground
Kamal M. Gamal, Ahmed S. Elshrkawy, Ahmed Elshesheny, Osama M. Moussa   +3 more
core   +1 more source