Results 11 to 20 of about 2,474,881 (217)

Comprehensive Direct Georeferencing of Aerial Images for Unmanned Aerial Systems Applications [PDF]

open access: yesSensors, 2022
Optical image sensors are the most common remote sensing data acquisition devices present in Unmanned Aerial Systems (UAS). In this context, assigning a location in a geographic frame of reference to the acquired image is a necessary task in the majority
Carlos A. M. Correia   +6 more
doaj   +13 more sources

Direct Georeferencing of Stationary LiDAR [PDF]

open access: yesRemote Sensing, 2009
Unlike mobile survey systems, stationary survey systems are given very little direct georeferencing attention. Direct Georeferencing is currently being used in several mobile applications, especially in terrestrial and airborne LiDAR systems ...
Ahmed Mohamed, Benjamin Wilkinson
doaj   +5 more sources

Adequacy of pseudo-direct georeferencing of terrestrial laser scanning data for coastal landscape surveying against indirect georeferencing [PDF]

open access: yesEuropean Journal of Remote Sensing, 2017
The georeferencing process is crucial to the accuracy of terrestrial laser scanner (TLS) data, in particular in the context of diachronic studies relying on multi-temporal surveys.
Marion Jaud   +8 more
doaj   +6 more sources

DIRECT GEOREFERENCING OF UAVS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
UAV systems have become an attractive data acquisition platform in emerging applications. As measuring instrument they extend the lineup of possible surveying methods in the field of geomatics.
M. Bláha   +3 more
doaj   +7 more sources

Direct Georeferencing for the Images in an Airborne LiDAR System by Automatic Boresight Misalignments Calibration [PDF]

open access: yesSensors, 2020
Airborne Light Detection and Ranging (LiDAR) system and digital camera are usually integrated on a flight platform to obtain multi-source data. However, the photogrammetric system calibration is often independent of the LiDAR system and performed by the ...
Haichi Ma   +4 more
doaj   +4 more sources

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

open access: yesDrones, 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   +5 more
doaj   +4 more sources

A MICRO-UAV WITH THE CAPABILITY OF DIRECT GEOREFERENCING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
This paper presents the development of a low cost UAV (Unmanned Aerial Vehicle) with the capability of direct georeferencing. The advantage of such system lies in its high maneuverability, operation flexibility as well as capability to acquire image ...
M. Rehak, R. Mabillard, J. Skaloud
doaj   +5 more sources

THEORETICAL ANALYSIS OF POSITIONAL UNCERTAINTY IN DIRECT GEOREFERENCING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
GNSS/INS system composed of Global Navigation Satellite System and Inertial Navigation System together can provide orientation parameters directly by the observations collected during the flight.
A. C. Kiraci, G. Toz
doaj   +3 more sources

SIMULATION MODEL FOR THE ASSESSMENT OF DIRECT AND INDIRECT GEOREFERENCING TECHNIQUES IN ANALYTICAL PHOTOGRAMMETRY [PDF]

open access: yesJournal of Engineering, 2011
This paper compares between the direct and indirect georeferencing techniques in Photogrammetry bases on a simulation model. A flight plan is designed which consists of three strips with nine overlapped images for each strip by a (Canon 500D) digital ...
H. Alwan, B. Saleem, L. Khalid
doaj   +2 more sources

Accuracy Assessment of UAV Photogrammetry System with RTK Measurements for Direct Georeferencing [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The direct georeferencing accuracy of unmanned aerial vehicle (UAV) images with real-time kinematic (RTK) measurements is a concerned topic in the community of photogrammetry.
Z. Niu   +6 more
doaj   +3 more sources

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