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Izdelava in analiza časovne vrste satelitskih posnetkov različnih virov : magistrsko delo = Time series analysis of satellite images from different sources : master thesis
Hegediš, Valentin, geodet
Z združevanjem podatkov iz različnih satelitskih sistemov imamo možnost zagotovitve večje časovne gostote podatkov. Pri tem se pojavi vprašanje, kako posnetke med seboj združiti, če so med posnetki ...različnih sistemov razhajanja. V magistrskem delu smo združevali dva vira visokoločljivostnih satelitskih posnetkov % Sentinel-2 in PlanetScope. Iz omenjenih posnetkov smo izdelovali rastre NDVI in jih med seboj harmonizirali s parametri regresijskih premic njihovih grafov raztrosa. Te parametre smo uporabili na rastrih NDVI PlanetScope in jih tako približali rastrom NDVI Sentinel-2. Po harmonizaciji so se vrednosti rastrov NDVI PlanetScope in Sentinel-2 bolje ujemale, kar smo v magistrski nalogi prikazali tako na samih rastrih NDVI, njihovih histogramih kot tudi na časovnih vrstah NDVI vrednosti. Pri vrednostih parametrov je oblačnost igrala veliko vlogo, zato smo rezultate prikazali za različne stopnje jasnosti neba. Z interpolacijo parametrov harmonizacije smo nad posameznimi območji rabe GERK izdelali časovne vrste spreminjanja vrednosti NDVI. Izvedbo korakov v magistrski nalogi smo avtomatizirali s programskima jezikoma Python in PL/pgSQL.
Type of material - master's thesis
; adult, serious
Publication and manufacture - [Ljubljana : V. Hegediš], 2019
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