GeometricÌŒni popravki opticÌŒnih satelitskih posnetkov

• Autore: Kosmatin Fras Mojca
• Pubblicazione: Ljubljana, : ZRC SAZU, ZalozÌŒba ZRC, 2018
• Descrizione fisica: 1 electronic resource (146 p.)
• Soggetto topico: Geographical information systems (GIS) & remote sensing; Geographical information systems, geodata and remote sensing
• Soggetto non controllato: automatic ortorectification; geometric models; optical satellite imagery; ortorectification; RANSAC; raw evaluation; geometrični modeli; optični satelitski posnetki; ortorektifikacija; robustna ocena; samodejna ortorektifikacija
• Persona (resp. second.): MarseticÌŒAlesÌŒ; OsÌŒtirKrisÌŒtof
• Sommario/riassunto: The monograph presents a fully automated procedure for geometric correction 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. In the monograph the original procedure connects several different methods into a single, robust system for automatic generation of orthoimages is documented in detail. The work 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. The 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 analisys of 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.; V knjigi je opisan popolnoma samodejen postopek geometricÌŒnih popravkov opticÌŒnih satelitskih posnetkov, ki deluje brez posredovanja operaterja med obdelavo. Dobljeni ortorektificiran posnetek je v drzÌŒavnem koordinatnem sistemu in predstavlja primerno podlago za prostorske analize. V knjigi je detajlno dokumentiran izviren postopek, ki povezuje vecÌŒ razlicÌŒnih metod v enoten in robusten sistem za samodejno izdelavo satelitskega ortofota. Opisan je celoten postopek samodejne ortorektifikacije, ki ga sestavljajo sÌŒtirje osnovni moduli: modul za branje in pripravo metapodatkov, modul za samodejno dolocÌŒanje oslonilnih tocÌŒk, modul za izracÌŒun parametrov geometricÌŒnega modela in modul za izvedbo ortorektifikacije. Poleg modulov so predstavljeni tudi poskusi s posnetki RapidEye in WorldView-2. Opravljeni poskusi so omogocÌŒili ovrednotenje delovanja samodejnega postopka dolocÌŒanja tocÌŒk, geometricÌŒnega modela, izlocÌŒanja grobih napak in oceno polozÌŒajne tocÌŒnosti ortoposnetkov. Analiza rezultatov testov kazÌŒe, da lahko samodejni postopek izdela ortoposnetke s polozÌŒajno tocÌŒnostjo okrog dveh pikslov ali manj, tudi cÌŒe je med samodejno dolocÌŒenimi oslonilnimi tocÌŒkami prisotnih vecÌŒ grobih napak.
• Titolo autorizzato: GeometricÌŒni popravki opticÌŒnih satelitskih posnetkov
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Sloveno
• Record Nr.: 9910687962303321
• Lo trovi qui: Univ. Federico II