Results 21 to 30 of about 2,531 (229)

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   +3 more sources

DIRECT GEOREFERENCING APPROACHES FOR CLOSE-RANGE AND UAV PHOTOGRAMMETRY IN THE BUILT HERITAGE DOMAIN [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
Direct georeferencing uses onboard sensors to measure the position and orientation of the camera during image acquisition for photogrammetric applications.
L. Teppati Losè   +2 more
doaj   +3 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

Calibration and accuracy assessment in a direct georeferencing system for UAS photogrammetry [PDF]

open access: yesInternational 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   +4 more sources

Application of a direct georeferencing method of drone images for smart farming [PDF]

open access: yesagricultural engineering.eu
In smart farming, information collected by autonomous devices needs to be related to its exact field location, that is, georeferenced. In this work, we study the applicability and accuracy of a simplified direct georeferencing method of drone images for
Ralph L. Stoop   +3 more
doaj   +4 more sources

IMPORTANCE OF PRECISE GRAVITY FIELD MODELING IN DIRECT GEOREFERENCING AND AERIAL PHOTOGRAMMETRY: A CASE STUDY FOR SWEDEN [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Direct georeferencing of airborne mobile mapping systems is developing with unprecedented speed using GNSS/INS integration. Removal of systematic errors is required for achieving a high accurate georeferenced product in mobile mapping platforms with ...
M. Bagherbandi   +6 more
doaj   +3 more sources

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   +3 more sources

The Use of Direct Georeferencing in Aerial Photogrammetry with Micro UAV

open access: yesIFAC-PapersOnLine, 2015
Abstract This paper deals with the practical use of the direct georeferencing technique which has applying in the area of aerial photogrammetry and digital surface model (DSM) creation. Todays micro unmanned aerial vehicles (UAVs) are able to carry high resolution camera, global navigation satellite system (GNSS) receiver with up to 1 centimeter ...
Petr Gabrlik
exaly   +2 more sources

Accuracy Assessment of Direct Georeferencing for Photogrammetric Applications Based on UAS-GNSS for High Andean Urban Environments

open access: yesDrones, 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   +3 more sources

Direct Georeferencing for Portable Mapping Systems: In the Air and on the Ground [PDF]

open access: yesJournal of Surveying Engineering, 2017
AbstractDuring the last few years, the acquisition of geometric information about objects by using a moving sensor platform has gained increasing popularity in the surveying community.
Lasse Klingbeil   +4 more
openaire   +4 more sources

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