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

Αγραφιώτης, Παναγιώτης; Agrafiotis, Panagiotis

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