Centre de documentation
scientifique

A multi-sensor system for airborne image capture and georeferencing / M.M.R. Mostafa in Photogrammetric Engineering & Remote Sensing, PERS, vol 66 n° 12 (December 2000)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 66 n° 12 (December 2000) . - pp 1417 - 1424 Titre : A multi-sensor system for airborne image capture and georeferencing Type de document : Article/Communication Auteurs : M.M.R. Mostafa, Auteur ; K.P. Schwarz, Auteur Année de publication : 2000 Article en page(s) : pp 1417 - 1424 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] caméra numérique [Termes IGN] élément d'orientation externe [Termes IGN] étalonnage de chambre métrique [Termes IGN] étalonnage géométrique [Termes IGN] géoréférencement direct [Termes IGN] GPS-INS [Termes IGN] image aérienne [Termes IGN] orientation externe [Termes IGN] photographie aérienne Résumé : (Auteur) The development and preliminary testing of a fully digital multi-sensor system for airborne remote sensing and geographic information system (GIS) applications is described. This system was developed at The University of Calgary in collaboration with The University of California at Berkeley, with aircraft and logistics support by HJW Inc., California. It integrates a medium class inertial navigation system (INS), two low-cost Global Positioning System (GPS) receivers, and a high resolution digital camera. During aerial image capture, camera exposure stations and INS digital records are time-tagged in real time by GPS. The INS/GPS-derived trajectory parameters describe the rigid body motion of the carrier ail-craft. Thus, they are directly related to the parameters of exterior orientation. During post-processing, these parameters are extracted, eliminating the need for ground control for airborne image acquisition applications. Flight tests were performed over a part of the university campus at Berkeley, using a strip photography approach to test the integrated system performance. In this paper, the concept of direct georeferencing of digital images without ground control is presented. System calibration results are then discussed in some detail, and special attention is given to the geometrical analysis of the system imaging component. An improved imaging system is proposed and validated by computer simulations. The potential of the new system for photogrammetric use is then discussed. The major applications of such a system will be in photo ecometrics; the mapping of utility lines, roads, and pipelines; and the generation of digital elevation models for engineering applications. Numéro de notice : A2000-218 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : sans En ligne : https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=01270670349cbdc4d [...] Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=21633 [article]