Titel
Automated Archiving of Archaeological Aerial Images
Autor*in
Martin Wieser
Department of Geodesy and Geoinformation, Technische Universität Wien
Geert Verhoeven
LBI for Archaeological Prospection and Virtual Archaeology
... show all
Abstract
The main purpose of any aerial photo archive is to allow quick access to images based on content and location. Therefore, next to a description of technical parameters and depicted content, georeferencing of every image is of vital importance. This can be done either by identifying the main photographed object (georeferencing of the image content) or by mapping the center point and/or the outline of the image footprint. The paper proposes a new image archiving workflow. The new pipeline is based on the parameters that are logged by a commercial, but cost-effective GNSS/IMU solution and processed with in-house-developed software. Together, these components allow one to automatically geolocate and rectify the (oblique) aerial images (by a simple planar rectification using the exterior orientation parameters) and to retrieve their footprints with reasonable accuracy, which is automatically stored as a vector file. The data of three test flights were used to determine the accuracy of the device, which turned out to be better than 1° for roll and pitch (mean between 0.0 and 0.21 with a standard deviation of 0.17–0.46) and better than 2.5° for yaw angles (mean between 0.0 and −0.14 with a standard deviation of 0.58–0.94). This turned out to be sufficient to enable a fast and almost automatic GIS-based archiving of all of the imagery.
Stichwort
aerial imagearchaeologydirect georeferencingexterior orientationgeocodingGNSS/INS
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
Remote Sensing
Band
8
Ausgabe
3
Publication
MDPI AG
Erscheinungsdatum
2016
Zugänglichkeit
Rechte
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