Results 31 to 40 of about 12,562 (250)
A SYSTEMATIC COMPARISON OF DIRECT AND IMAGE-BASED GEOREFERENCING IN CHALLENGING URBAN AREAS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 Image-based mobile mapping systems enable an efficient acquisition of georeferenced image sequences, which can be used for geo-data capture in subsequent steps. In order to provide accurate measurements in a given reference frame while e.g.
S. Cavegn +3 more
doaj +1 more source
Calibration and accuracy assessment in a direct georeferencing system for UAS photogrammetry [PDF]
International Journal of Remote Sensing, 2018 Unmanned aerial systems (UASs) have been already proven to be useful in fields and disciplines such as agriculture, forestry, or environmental mapping, and they have also found application during natural and nuclear disasters. In many cases, the environment is inaccessible or dangerous for a human being, meaning that the widely used technique of aerial
Petr Gabrlik +4 more
openaire +2 more sources
Automated identification of river hydromorphological features using UAV high resolution aerial imagery [PDF]
, 2015 European legislation is driving the development of methods for river ecosystem protection in light of concerns over water quality and ecology. Key to their success is the accurate and rapid characterisation of physical features (i.e., hydromorphology ...
Ballesteros Gonzalez, Rocio +3 more
core +4 more sources
Assessing the georeferencing accuracy of different amount of image stripes for linear UAV projects
RUDN Journal of Ecology and Life Safety, 2020 At present, the results of photogrammetric processing of images obtained from UAVs (orthophoto mosaics, digital elevation models, etc.) are widely used for environmental studies.
Amr Mahmoud El Sheshtawy +3 more
doaj +1 more source
EVALUATION OF SAR DATA AS SOURCE OF GROUND CONTROL INFORMATION: FIRST RESULTS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013 The high resolution imaging modes of modern SAR sensors has made SAR data compatible with optical images. SAR data offers various capabilities which can enhance the geometric correction process of optical images (accurate, direct and ground-independent
D. I. Vassilaki +2 more
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Digital representation of historical globes : methods to make 3D and pseudo-3D models of sixteenth century Mercator globes [PDF]
, 2012 In this paper, the construction of digital representations of a terrestrial and celestial globe will be discussed. Virtual digital (3D) models play an important role in recent research and publications on cultural heritage.
De Coene, Karen +5 more
core +2 more sources
HIGH-PRECISION POSITIONING AND REAL-TIME DATA PROCESSING OF UAV-SYSTEMS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012 Available micro-sized Unmanned Aerial Vehicles (UAVs) in the civilian domain currently make use of common GPS receivers and do not address scenarios where high-precision positioning of the UAV is an inevitable requirement.
M. Rieke +3 more
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Positioning in time and space: cost-effective exterior orientation for airborne archaeological photographs [PDF]
, 2013 Since manned, airborne aerial reconnaissance for archaeological purposes is often characterised by more-or-less random photographing of archaeological features on the Earth, the exact position and orientation of the camera during image acquisition ...
Briese, Christian +3 more
core +2 more sources
Sensors, 2012 To facilitate applications such as environment detection or disaster monitoring, the development of rapid low cost systems for collecting near real time spatial information is very critical.
Chien-Hsun Chu +2 more
doaj +1 more source
Drones, 2022 Unmanned Aircraft Systems (UAS) are used in a variety of applications with the aim of mapping detailed surfaces from the air. Despite the high level of map automation achieved today, there are still challenges in the accuracy of georeferencing that can ...
Rolando Salas López +6 more
doaj +1 more source