Results 1 to 10 of about 25,331 (199)

GEOMONITORING OF A LARGE LANDSLIDE AT THE LÄRCHBERG / MURAU (AUSTRIA) WITH SELECTED GEOSPATIAL TECHNOLOGIES [PDF]

open access: yesActa Geobalcanica, 2021
In April 2001 a rock fall at the Lärchberg-Galgenwald with boulders of several cubic meters in size did occur, which reached until the 50 to 70 m wide apron of the Federal Highway B96.
Wolfgang Sulzer   +3 more
doaj   +1 more source

The integrative force of political institutions? Direct democracy and voter turnout across ethnic and nativity groups

open access: yesComparative Migration Studies, 2021
Much has been written on the positive effect of direct democracy (initiatives, referendums) on voter turnout. However, we have limited knowledge about potential differential effects on voters belonging to various ethnic groups.
Anita Manatschal
doaj   +1 more source

The Methodological Aspects of Constructing a High-Resolution DEM of Large Territories Using Low-Cost UAVs on the Example of the Sarycum Aeolian Complex, Dagestan, Russia

open access: yesDrones, 2021
Unmanned aerial vehicles (UAV) have long been well established as a reliable way to construct highly accurate, up-to-date digital elevation models (DEM).
Artur Gafurov
doaj   +1 more source

DOCUMENTING PAINTINGS USING GIGAPIXEL SFM PHOTOGRAMMETRY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
Abstract. Capturing paintings with gigapixel resolution (resolution around 1000 megapixels or greater) is an innovative technique that is starting to be used by some important international museums for documenting, analysing, and disseminating their masterpieces.This line of research is extremely interesting, not only for art curators and scholars, but
Cabezos Bernal, Pedro Manuel   +2 more
openaire   +5 more sources

Characterising vent and crater shape changes at Stromboli: implications for risk areas

open access: yesVolcanica, 2021
Active volcanoes are typically subject to frequent substantial topographic changes as well as variable eruption intensity, style and/or directionality. Gravitational instabilities and local accumulation of pyroclasts affect conditions at the active vents,
Markus Schmid   +5 more
doaj   +1 more source

2D and 3D Positioning Performance of UAV-Based Photogrammetry in Residential Regions

open access: yesHittite Journal of Science and Engineering, 2020
UAVs Unmanned Aerial Vehicles are commonly used in photogrammetric observations in research fields like agriculture, archaeology, industry and construction of base maps.
Mehmet Nurullah Alkan   +3 more
doaj   +1 more source

Volcanological applications of unoccupied aircraft systems (UAS)

open access: yesVolcanica, 2020
Unoccupied aircraft systems (UAS) are developing into fundamental tools for tackling the grand challenges in volcanology; here, we review the systems used and their diverse applications.
Mike R James   +15 more
doaj   +1 more source

Aplicación de la fotogrametría con drones al control deformacional de estructuras y terreno

open access: yesInformes de la Construccion, 2021
En este trabajo se estudia la viabilidad del empleo de drones para el control de deformaciones del terreno y las estructuras, analizando para cada caso, la resolución, precisión y validación con otras técnicas.
Rubén Sancho Gómez-Zurdo   +4 more
doaj   +1 more source

Técnicas de musealización virtual. Los capiteles del Monasterio de San Cugat

open access: yesEGA, 2017
Las nuevas técnicas de levantamiento fotogramétrico, como la foto modelación SfM, nos permiten documentar el patrimonio mediante modelos tridimensionales texturizados que pueden ser divulgados vía internet a través de los recientes repositorios de ...
Pedro M. Cabezos Bernal, Adriana Rossi
doaj   +1 more source

Video Registration to SfM Models [PDF]

open access: yes, 2014
Registering image data to Structure from Motion (SfM) point clouds is widely used to find precise camera location and orientation with respect to a world model. In case of videos one constraint has previously been unexploited: temporal smoothness. Without temporal smoothness the magnitude of the pose error in each frame of a video will often dominate ...
Kroeger, Till; Van Gool, Luc
openaire   +1 more source

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