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Analiza točnosti fotogrametričnih izdelkov iz fotografij z daljinsko vodenega letalnika : diplomska naloga
ID Novak, Nejc (Author), ID Kosmatin Fras, Mojca (Mentor) More about this mentor... This link opens in a new window, ID Grigillo, Dejan (Co-mentor)

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Abstract
Razvoj letalnikov je deloma spremenil potek dela v geodeziji, kjer bližnje slikovno aerofotografiranje predstavlja hitrejši in bolj optimalni način zajema prostorskih podatkov. Pri tem je pomembno, da se zavedamo tako prednosti kot tudi slabosti omenjene tehnologije. V diplomski nalogi sem primerjal položaje točk, pridobljenih z dvema metodama izmere na istem območju. Med seboj sem primerjal položajno odstopanje točk na načrtu, izdelanem s klasično terestrično metodo izmere, ter točk na fotogrametrično izdelanem načrtu. Oba načrta smo izdelali v programu AutoCAD. Za cenilko točnosti smo uporabili koren srednjega kvadratnega pogreška. Analizo sem naredil po treh vsebinskih skupinah točk po horizontalnem položaju (RMSE 2D) in po 3D položaju (RMSE 3D). V prvi skupini analiziranih točk so bili jaški, za katere smo dobili rezultat RMSE 2D 5,4 cm in RMSE 3D 7,1 cm. Druga skupina točk so točke na lomih in koncih linijskih objektov, katerih RMSE 2D znaša 3,7 cm, RMSE 3D pa 6,6 cm. V tretji skupini točk smo združili vse točke in dobili vrednost za RMSE 2D 4,6 cm in za RMSE 3D 6,9 cm.

Language:Slovenian
Keywords:geodetski načrt, oblak točk, ortofoto, točnost fotogrametričnih izdelkov, daljinsko voden letalnik
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FGG - Faculty of Civil and Geodetic Engineering
Publisher:N. Novak]
Year:2019
PID:20.500.12556/RUL-112564 This link opens in a new window
UDC:528.7/.8(043.2)
COBISS.SI-ID:8975201 This link opens in a new window
Publication date in RUL:25.10.2019
Views:1277
Downloads:261
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Secondary language

Language:English
Title:Accuracy analysis of photogrammetric products from UAV images : graduation thesis
Abstract:
Development of UAVs (angl. unmanned aerial vehicles) has partly changed the workflow in geodesy, where close-range aero photogrammetry represents a faster and more efficient way of capturing spatial data. As with other technologies, there is important to become familiar with some advantages and disadvantages that users need to be acquired with. In the graduation thesis I compared the positions of the points acquired with two measurement methods in the same area. I compared the positional difference of the plan made with the classical terrestrial measurement method and the geodetic plan made with photogrammetry. Both plans were made in AutoCAD. We used root-mean-square error (RMSE) as a measure to estimate accuracy. I analyzed three sets of points, first one by horizontal position (RMSE 2D) and second by 3D position (RMSE 3D). The first group of points analyzed included shafts and get the computed RMSE 2D of 5.4 cm and RMSE 3D of 7.1 cm. The second group of points is composed of the fractures and ends of line objects whose RMSE 2D is 3.7 cm and RMSE 3D is 6.6 cm. In the third group of points we calculated RMSE for all points and get for the RMSE 2D 4.6 cm and for the RMSE 3D 6.9 cm.

Keywords:Geodetic plan, point cloud, orthophoto, accuracy of photogrammetric products, unmanned aerial vehicle

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