Results 201 to 210 of about 2,474,881 (217)

Accuracy of direct georeferencing strategies to monitor geomorphological features

2022
<p>Geomorphic systems face significant changes of climate, land uses, vegetation cover and socio-demographic characteristics. In this context, the accurate monitoring of geomorphological features may be a relevant tool to understand the consequences and the risks of these changes.
Álvaro Gómez-Gutiérrez, Manuel Sánchez-Fernández, José Juan de Sanjosé-Blasco, Francisco Lavado-Contador   +3 more
openaire   +1 more source

Accuracy analysis of MAMS data using direct georeferencing

2012 Second International Workshop on Earth Observation and Remote Sensing Applications, 2012
The conventional airborne photogrammetry is difficult to implement in some areas, such as marine, deserts, grassland and high mountain regions where the installation of ground control point (GCP) is dangerous or impossible. With the availability of integrated GPS and inertial measurement units (IMU), which are also called POS, this situation is ...
null Kuifeng Luan, null Peng Chen, null Songlin Zhang, null Xiaohua Tong, null Yanhua Ma, null Wei Wang, null Rong Shu, null Shijie Liu   +7 more
openaire   +1 more source

Approximate Correction of Length Distortion for Direct Georeferencing in Map Projection Frame

IEEE Geoscience and Remote Sensing Letters, 2013
Many geometric distortions, such as earth curvature distortion and length distortion, exist in the map projection frame. Therefore, in aerial photogrammetry, if direct georeferencing is performed in the map projection frame, the crucial work becomes compensating for the effect of the various geometric distortions.
Yongjun Zhang 0002, Xiang Shen
openaire   +2 more sources

Initial results of the Italian project on direct georeferencing in aerial photogrammetry

2004
The paper describes one of the first outcomes of an Italian national research Project on inertial positioning in photogrammetry. The focus of the paper is on the quality which is attainable from direct photogrammetry in an industrial production context.
Casella V., Franzini M., FORLANI, Gianfranco, Galetto R., Manzino A., Radicioni F., Sona G., Villa B.   +7 more
openaire   +6 more sources

Direct georeferencing for Hyperspectral Imaging of ocean surface

2023 IEEE Aerospace Conference, 2023
Oliver Hasler, Håvard Løvås, Torleiv H. Bryne, Tor Arne Johansen   +3 more
openaire   +1 more source

Improving the Spatial Accuracy of UAV Platforms Using Direct Georeferencing Methods: An Application for Steep Slopes

Remote Sensing, 2023
Mustafa Zeybek, Ismail Elkhrachy, Selim Taskaya   +2 more
exaly  

Direct Georeferencing UAV-SfM in High-Relief Topography: Accuracy Assessment and Alternative Ground Control Strategies along Steep Inaccessible Rock Slopes

Remote Sensing, 2022
Paul Nesbit, , Stephen Hubbard
exaly  

Deflection of Vertical Effect on Direct Georeferencing in Aerial Mobile Mapping Systems: A Case Study in Sweden

Photogrammetric Record, 2022
Arash Jouybari, Mohammad Bagherbandi, Faramarz Nilfouroushan   +2 more
exaly  

Transformation of UAV Attitude and Position for Use in Direct Georeferencing

2016
The direct georeferencing in aerial photogrammetry requires precise measurement of position and attitude of an image sensor, because the object point position is computed directly using this data. But for several reasons, data from onboard inertial navigation system can not be used for this purpose directly.
openaire   +1 more source

Quality Analysis of Direct Georeferencing in Aspects of Absolute Accuracy and Precision for a UAV-Based Laser Scanning System

Remote Sensing, 2021
Lasse Klingbeil, Jannik Jansen, Heiner Kuhlmann   +2 more
exaly