magistrsko delo
Lucija Cigelšek (Avtor), Polona Pavlovčič Prešeren (Mentor), Mojca Kosmatin Fras (Komentor), Dejan Grigillo (Komentor)

Povzetek

Ortofoto je med uporabniki zelo priljubljen, vendar za kontrolo njegove kakovosti v Sloveniji nimamo obvezujočega standarda. Kontrola se izvaja sistematično ob izvajanju projekta Cikličnega aerofotografiranja Slovenije in ob podpori znanstveno-tehničnega poročila (Kapnias et al., 2008). V tujini se za kontrolo položajne točnosti prostorskih podatkov uporabljajo številni standardi, med katerimi lahko z vidika aktualnosti izpostavimo Nacionalni standard za oceno točnosti prostorskih podatkov (NSSDA) in Sporazum o standardizaciji 2215 (STANAG 2215). Ker se standarda precej razlikujeta v velikosti vzorca in statističnem modelu, smo ju v magistrskem delu praktično preizkusili na primeru kontrole državnega ortofota iz časovne serije 2014 na območju trigonometrične sekcije Celje. Izmerili smo kontrolne točke na ortofotu, na stereoparih in pridobili referenčne vrednosti z RTK-metodo izmere GNSS. Podatke smo obdelali po metodologijah obeh standardov in jih ovrednotili. Za dva lista smo izdelali ortofoto z uporabo DMR 1, pridobljenega iz podatkov laserskega skeniranja, ter preverili ali so se odstopanja na kontrolnih točkah zmanjšala. Predstavili smo ugotovitve in podali naše mnenje za uvedbo standarda STANAG 2215 v kontrolo položajne točnosti državnega ortofota v Sloveniji.

Ključne besede

geodezija;magistrska dela;ortofoto;GNSS;stereofotogrametrija;kakovost;položajna točnost;standard;NSSDA;STANAG 2215;

Podatki

Jezik: Slovenski jezik
Leto izida:
Tipologija: 2.09 - Magistrsko delo
Organizacija: UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik: [L. Cigelšek]
UDK: 528.715(043.3)
COBISS: 7752545 Povezava se bo odprla v novem oknu
Št. ogledov: 2162
Št. prenosov: 586
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarni naslov: Positional accuracy control of national orthophoto with GNSS positioning
Sekundarni povzetek: Orthophoto is very popular among the users, but its quality is not regulated, since there is no mandatory quality control standard existent in Slovenia. Quality check is performed systematically during the implementation of the project of the Cyclic Aerial Survey of Slovenia and with the support of the scientific and technical report (Kapnias et al., 2008). A number of standards are being used abroad to control the positional accuracy of spatial data, among which the most relevant are the National Standard for Spatial Data Accuracy (NSSDA) and the Standardization Agreement 2215 (STANAG 2215). Since both standards differ considerably in the size of the sample and the statistical model, they were put to test in the master thesis by using them to control the quality of the national orthophoto from the 2014 time series in the trigonometric district of Celje. The orthophoto and stereopair control points were measured and reference values were obtained by the GNSS RTK method. Data was processed by using the methodology of both standards and the standards were subsequently evaluated. Orthophoto was produced for two sections by using DMR 1 obtained from the laser scan data, and the reduction in variation at control points was examined. The results were interpreted and STANAG 2215 was suggested as the national standard for measuring the quality of positional accuracy of orthophoto in Slovenia.
Sekundarne ključne besede: geodesy;master of science thesis;orthophoto;GNSS;stereophotogrammetry;quality;positional accuracy;standard;NSSDA;STANAG 2215;
Vrsta datoteke: application/pdf
Vrsta dela (COBISS): Magistrsko delo/naloga
Komentar na gradivo: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Strani: XIV, 62 str., 8 pril.
ID: 9227916