Γεωμετρική και Ποιοτική Σύγκριση και Αξιολόγηση Παραγώγων Δορυφορικών Εικόνων Πολύ Υψηλής Ανάλυσης

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dc.contributor.author Αγραφιώτης, Παναγιώτης el
dc.contributor.author Agrafiotis, Panagiotis en
dc.date.accessioned 2020-10-07T08:43:45Z
dc.date.available 2020-10-07T08:43:45Z
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/51306
dc.identifier.uri http://dx.doi.org/10.26240/heal.ntua.19004
dc.rights Αναφορά Δημιουργού - Μη Εμπορική Χρήση - Παρόμοια Διανομή 3.0 Ελλάδα *
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/3.0/gr/ *
dc.subject Δορυφορικές Εικόνες el
dc.subject Φωτογραμμετρία el
dc.subject Σύγκριση el
dc.subject Αξιολόγηση el
dc.subject Ορθοεικόνες el
dc.subject Satellite Imagery en
dc.subject Orthoimagery el
dc.subject Pleiades 1B el
dc.subject Geometric Evaluation el
dc.subject Accuracy el
dc.title Γεωμετρική και Ποιοτική Σύγκριση και Αξιολόγηση Παραγώγων Δορυφορικών Εικόνων Πολύ Υψηλής Ανάλυσης el
dc.contributor.department Διατμηματικό Πρόγραμμα Μεταπτυχιακών Σπουδών (ΔΠΜΣ) Γεωπληροφορική el
heal.type masterThesis
heal.secondaryTitle Geometric and Quality Comparison of Products Derived from Very High Resolution Satellite Images en
heal.classification Photogrammetry en
heal.classification Remote sensing en
heal.classification Φωτογραμμετρία el
heal.classification Τηλεπισκόπηση el
heal.classificationURI http://id.loc.gov/authorities/subjects/sh85101174
heal.classificationURI http://skos.um.es/unescothes/C03347
heal.language en
heal.access free
heal.recordProvider ntua el
heal.publicationDate 2015-03-06
heal.abstract This study aims to assess the accuracy and radiometric quality of orthorectified high resolution satellite imagery from Pleiades-1B satellites through a comparative evaluation of their quantitative and qualitative properties. In addition, the effect of pansharpening algorithms on Digital Surface Model (DSM) Extraction and consequently on the resulting Orthoimagery is investigated. A Pleiades-B1 stereopair of high resolution images taken in 2013, two adjacent GeoEye-1 stereopairs from 2011 and aerial orthophotomosaic (LSO) provided by NCMA S.A (Hellenic Cadastre) from 2007 with a GSD of 0.50m have been used for the comparison tests. As control dataset the orthophotomosaic from aerial imagery provided also by NCMA S.A (0.25m GSD) from 2012 was selected. The process for DSM and orthoimage production was performed using commercial digital photogrammetric workstations. The two resulting orthoimages from Pleiades 1B and GeoEye-1 data, the Orthoimagery from the Pleiades 1B pansharpened data and the aerial orthomosaic (LSO) are relatively and absolutely evaluated for their quantitative properties. Test measurements are performed using the same check points in order to establish their accuracy both as far as the single point coordinates as well as their distances is concerned. Check points were distributed according to JRC Guidelines for Best Practice and Quality Checking of Ortho Imagery, and NSSDA standards while areas with different terrain relief and land cover were also included. The tests performed are based also on JRC, ASPRS and NSSDA accuracy standards. Finally, tests were carried out in order to assess the radiometric quality of the orthoimagery. The results are presented with a statistical analysis and they are evaluated in order to present the merits and demerits of the imaging sensors involved for orthoimage production and the effects of pansharpening algorithms on the Orthoimagery of Pleiades 1B satellite. The results also serve for a critical approach for the usability and cost efficiency of satellite imagery for the production of Large Scale Orthophotos. en
heal.advisorName Georgopoulos, Andreas en
heal.committeeMemberName Ioannidis, Charalambos en
heal.committeeMemberName Karantzalos, Konstantinos en
heal.academicPublisher Σχολή Αγρονόμων και Τοπογράφων Μηχανικών el
heal.academicPublisherID ntua
heal.numberOfPages 74
heal.fullTextAvailability true

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Αναφορά Δημιουργού - Μη Εμπορική Χρήση - Παρόμοια Διανομή 3.0 Ελλάδα Except where otherwise noted, this item's license is described as Αναφορά Δημιουργού - Μη Εμπορική Χρήση - Παρόμοια Διανομή 3.0 Ελλάδα