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Samodejna ortorektifikacija visokoločljivih optičnih satelitskih posnetkov : doktorska disertacija
Marsetič, Aleš (Author), Kosmatin Fras, Mojca (Mentor) More about this mentor... This link opens in a new window, Oštir, Krištof (Co-mentor), Mikoš, Matjaž (Thesis defence commission member), Petrovič, Dušan (Thesis defence commission member), Kokalj, Žiga (Thesis defence commission member), Hladnik, David (Thesis defence commission member)

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Abstract
V doktorski disertaciji smo razvili popolnoma samodejen postopek za ortorektifikacijo optičnih satelitskih posnetkov, brez posredovanja operaterja med obdelavo. Ortorektificiran posnetek je v državnem koordinatnem sistemu in predstavlja primerno podlago za prostorske analize. Izdelan izviren postopek povezuje več različnih metod v enoten in robusten sistem za samodejno izdelavo ortoposnetkov. Doktorska disertacija opisuje celoten postopek samodejne ortorektifikacije, ki ga sestavljajo štirje osnovni moduli: modul za branje in pripravo metapodatkov, modul za samodejno določanje oslonilnih točk, modul za izračun parametrov geometričnega modela in modul za izvedbo ortorektifikacije. Poleg modulov so predstavljeni tudi poskusi s posnetki RapidEye in WorldView-2. Opravljeni poskusi so omogočili ovrednotenje delovanja samodejnega postopka določanja točk, geometričnega modela, izločanja grobih napak in oceno položajne točnosti ortoposnetkov. Rezultati testov kažejo, da lahko samodejni postopek izdela ortoposnetke s položajno točnostjo okrog dveh pikslov ali manj, tudi če je med samodejno določenimi oslonilnimi točkami prisotnih več grobih napak.

Language:Slovenian
Keywords:grajeno okolje, gradbeništvo, disertacije, samodejna ortorektifikacija, optični satelitski posnetki, geometrični model, RANSAC, robustna ocena
Work type:Doctoral dissertation (mb31)
Tipology:2.08 - Doctoral Dissertation
Organization:FGG - Faculty of Civil and Geodetic Engineering
Year:2015
Publisher:[A. Marsetič]
Number of pages:XXII, 136 str., [18] str. pril.
Place:Ljubljana
COBISS.SI-ID:7257697 Link is opened in a new window
Views:882
Downloads:268
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Secondary language

Language:English
Title:Automatic orthorectification of high-resolution optical satellite images : doctoral thesis
Abstract:
In the doctoral dissertation we have developed a fully automated procedure for orthorectification of optical satellite images, without any manual intervention during the processing. The resulting orthorectified image is in the national coordinate system and constitutes a suitable source for spatial analyses. The original procedure connects several different methods into a single, robust system for automatic generation of orthoimages. The doctoral dissertation describes the whole automatic orthorectification process, which comprises four basic modules: a module for extracting and preparing the metadata, a module for automatic extraction of ground control points, a module for calculation of parameters of the geometric model, and a module for orthorectification. Experiments and results with RapidEye and WorldView-2 images are also presented. The experiments evaluate the procedure for automatic extraction of points, the geometric model, the elimination of gross errors, and the positional accuracy of the orthoimages. The results indicate that the automated procedure produces orthoimages with a positional accuracy of about two pixels or better, even if several gross errors are present among the automatically extracted ground control points.

Keywords:building environment, civil engineering, thesis, automatic orthorectification, optical satellite images, geometric model, RANSAC, robust estimation

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