Results 41 to 50 of about 2,474,881 (217)

A Low Cost UWB Based Solution for Direct Georeferencing UAV Photogrammetry [PDF]

open access: yesRemote Sensing, 2017
Thanks to their flexibility and availability at reduced costs, Unmanned Aerial Vehicles (UAVs) have been recently used on a wide range of applications and conditions. Among these, they can play an important role in monitoring critical events (e.g., disaster monitoring) when the presence of humans close to the scene shall be avoided for safety reasons ...
MASIERO, ANDREA   +2 more
openaire   +3 more sources

Precise topographic mapping using direct georeferencing in UAV [PDF]

open access: yesIOP Conference Series: Earth and Environmental Science, 2020
Abstract Mapping using UAV has become very popular today due to the rapid development of electronic technology. UAVs are needed to support rapid mapping activities, such as natural disaster management, SAR applications, agricultural applications and forest fire monitoring. In addition to spatial resolution, it is also needed the accuracy
A Syetiawan   +3 more
openaire   +1 more source

Direct Action Network : against corporate globalization

open access: yes, 1999
Alternative title: [Fund raising letter]. Cosponsors include: Global Exchange, Rainforest Action Network, Ruckus Society, Project Underground, National Lawyers Guild, CISPES, IWW (Seattle), Green Party (Seattle), Earth First!
Direct Action Network (DAN)
core   +3 more sources

Accuracy assessment of real-time kinematics (RTK) measurements on unmanned aerial vehicles (UAV) for direct geo-referencing

open access: yesGeo-spatial Information Science, 2020
Geospatial information acquired with Unmanned Aerial Vehicles (UAV) provides valuable decision-making support in many different domains, and technological advances coincide with a demand for ever more sophisticated data products.
Desta Ekaso, Francesco Nex, Norman Kerle
doaj   +1 more source

EVALUATION OF SAR DATA AS SOURCE OF GROUND CONTROL INFORMATION: FIRST RESULTS [PDF]

open access: yesThe 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
doaj   +1 more source

The Development of an UAV Borne Direct Georeferenced Photogrammetric Platform for Ground Control Point Free Applications

open access: yesSensors, 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

Assessing the georeferencing accuracy of different amount of image stripes for linear UAV projects

open access: yesRUDN 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

A SYSTEMATIC COMPARISON OF DIRECT AND IMAGE-BASED GEOREFERENCING IN CHALLENGING URBAN AREAS [PDF]

open access: yesThe 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

ANALISIS AKURASI PEMETAAN MENGGUNAKAN DIRECT GEOREFERENCING

open access: yesGEOMATIKA, 2018
Banyak tantangan yang harus dihadapi ketika melaksanakan survei <br />Ground Control Point (GCP). Salah satu upaya meminimalisir jumlah titik kontrol adalah melakukan pengukuran posisi dan orientasi foto udara tanpa GCP, atau disebut direct georeferencing .
Danang Budi Susetyo, Herjuno Gularso
openaire   +1 more source

HIGH-PRECISION POSITIONING AND REAL-TIME DATA PROCESSING OF UAV-SYSTEMS [PDF]

open access: yesThe 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
doaj   +1 more source

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