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Low altitude aerial photography applications for digital surface models creation in archaeology / José-Angel Martinez-Del-Pozo in Transactions in GIS, vol 17 n° 2 (April 2013)  

Public [article]  inTransactions in GIS > vol 17 n° 2 (April 2013) . - pp 227 - 246 Titre : Low altitude aerial photography applications for digital surface models creation in archaeology Type de document : Article/Communication Auteurs : José-Angel Martinez-Del-Pozo, Auteur ; Enrique Cerillo-Cuenca, Auteur ; Ernesto Salas-Tovar, Auteur Année de publication : 2013 Article en page(s) : pp 227 - 246 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] acquisition d'images [Termes IGN] archéologie aérienne [Termes IGN] fiabilité des données [Termes IGN] hauteur de vol [Termes IGN] image aérienne [Termes IGN] image multitemporelle [Termes IGN] modèle numérique de surface [Termes IGN] similitude Résumé : (Auteur) Low Altitude Aerial Photography (LAAP) is based on the use of small flying platforms to take photographs from very low altitudes. The acquisition of series of Digital Surface Models (DSMs) and orthoimages through photogrammetric and orthorectification processes is one of the main applications. The use of this technique in archaeological sites provides very precise and valuable data, but knowing the reliability of the method is a key to ensuring that the results are valid, since the repeatability of the method is fundamental to multitemporal studies. The present work shows an analysis of the similarity of DSMs obtained from different stereoscopic pairs from the same area. The reliability of the models has been assessed by calculating the Standard Deviation (STD) of the altitude values from the models, to obtain maps displaying the differences among them. Finally, the STD values' spatial distribution has been studied to assess if spatial autocorrelation exists by means of the Moran's Index and Anselin's Local Moran's Index. Results showed good similarity among the models and revealed clearly those areas where the model must be edited. Numéro de notice : A2013-172 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2012.01361.x Date de publication en ligne : 06/11/2012 En ligne : https://doi.org/10.1111/j.1467-9671.2012.01361.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32310 [article]