Uporaba interaktivne metode fotogrametrične orientacije posnetkov na primeru Ledenika pod Skuto : diplomska naloga

Barbo, Patricija (avtor), Kosmatin Fras, Mojca (mentor), Triglav Čekada, Mihaela (komentor)

Interaktivna metoda fotogrametrične orientacije posnetkov je enoslikovna metoda, s katero lahko na podlagi enega posnetka in digitalnega modela reliefa določimo 3D-položaj vsebine posnetka. Zunanja orientacija je postopek umeščanja posnetka v prostor v trenutku njegovega nastanka. Parametre zunanje orientacije v primeru interaktivne metode pridobimo z iskanjem optimalnega ujemanja motiva na posnetku s projiciranim DMR-jem. V diplomski nalogi smo obravnavali izbor arhivskih posnetkov Ledenika pod Skuto iz let 1963, 1982, 1995, 2006, 2010 in 2015, ki nam jih je posredoval Geografski inštitut Antona Melika ZRC SAZU. Za obdelavo smo uporabili obstoječ program, ki je nastal na Geodetskem inštitutu Slovenije. Za vsak obravnavan arhivski posnetek smo določili parametre zunanje orientacije in zajeli 3D-obod ledenika. Na podlagi oboda smo s programskim orodjem ArcMap izračunali površino in prostornino, poleg tega smo določili tudi nadmorsko višino zgornjega robu ledenika. Ugotovljeno je bilo, da se je površina v obravnavanem obdobju od leta 1963 do 2015 zmanjšala za 61 %. Prostornina ledenika se je od leta 1963 do 2006, ko je bila najmanjša, zmanjšala za 371.000 m3. Nadmorska višina zgornjega robu ledenika pa se je med 1963 in 2015 znižala za 40 m. Spremembo površine ledenika smo povezali s spremembo letne temperature zraka. Na koncu smo ocenili še natančnost uporabljene metode.

• Jezik: Slovenski jezik
• Ključne besede: interaktivna metoda orientacije posnetkov, zunanja orientacija, DMR, ledenik, površina, prostornina, arhivski posnetki, Ledenik Pod Skuto
• Vrsta gradiva: Diplomsko delo/naloga
• Tipologija: 2.11 - Diplomsko delo
• Organizacija: FGG - Fakulteta za gradbeništvo in geodezijo
• Založnik: [P. Barbo]
• Leto izida: 2018
• PID: 20.500.12556/RUL-103341
• UDK: 528.715:551.324(043.2)
• COBISS.SI-ID: 8539745
• Datum objave v RUL: 16.09.2018

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: Using interactive method of photogrammetric orientation for studying the Skuta glacier : graduation thesis

Izvleček

An interactive method of photogrammetric orientation is a single-image acquisition method, which allows us to determine 3D-position of the image details based just on one image and digital terrain model. Exterior orientation is a procedure that gives us information about the position and orientation of the camera at the time when the image was taken. Parameters of exterior orientation are derived from a search for the optimal matching of the image detail with the projected DTM. In this graduation thesis we used a selection of archival images of the Skuta glacier from years: 1963, 1982, 1995, 2006, 2010 and 2015. Those images were provided by the Anton Melik Geographical Institute by the Slovenian Academy of Sciences and Arts. For interactive orientation we used existing program, which was created at the Geodetic Institute of Slovenia. For each archival image we determined the parameters of exterior orientation and captured the 3D-circumference of the glacier. Then we calculated area, volume and altitude of the upper edge of the glacier using the ArcMap software. We found out that the area of the glacier decreased by 61% over the period 1963 and 2015. In the years between 1963 and 2006 the volume of the glacier decreased by 371.000 m3. And the altitude of the upper edge of the glacier decreased by 40 m between 1963 and 2015. We have determined how the change of glacier surface is related to the change of the annual air temperature. At the end we evaluated the accuracy of the used method.

• Ključne besede: interactive method of photogrammetric orientation, exterior orientation, DTM, glacier, area, volume, archival image, Skuta glacier