doktorska disertacija
Aleš Marsetič (Author), Mojca Kosmatin Fras (Mentor), Matjaž Mikoš (Thesis defence commission member), Dušan Petrovič (Thesis defence commission member), Žiga Kokalj (Thesis defence commission member), David Hladnik (Thesis defence commission member), Krištof Oštir (Co-mentor)

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.

Keywords

Grajeno okolje;geodezija;disertacije;samodejna ortorektifikacija;optični satelitski posnetki;geometrični model;RANSAC;robustna ocena;

Data

Language: Slovenian
Year of publishing:
Typology: 2.08 - Doctoral Dissertation
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [A. Marsetič]
UDC: 528.7(043)
COBISS: 7257697 Link will open in a new window
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Other data

Secondary language: English
Secondary title: Automatic orthorectification of high-resolution optical satellite images
Secondary 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.
Secondary keywords: Built Environment;geodesy;doctoral thesis;automatic orthorectification;optical satellite images;geometric model;RANSAC;robust estimation;
File type: application/pdf
Type (COBISS): Doctoral dissertation
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: XXII, 136 str., [18] str. pril.
ID: 9063433