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Raziskava stabilnosti parametrov notranje orientacije fotoaparata v brezpilotnem letalnem sistemu in njihov vpliv na položajno točnost izdelkov : diplomska naloga
Uršič, Matija (Author), Kosmatin Fras, Mojca (Mentor) More about this mentor... This link opens in a new window, Grigillo, Dejan (Co-mentor), Bone, Matej (Co-mentor), Stopar, Bojan (Thesis defence commission member), Petrovič, Dušan (Thesis defence commission member)

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Abstract
Ob vse pogostejši uporabi brezpilotnih letalnih sistemov v geodeziji, postajajo ti vse bolj izpopolnjeni. Tako se pri želji po doseganju visoke točnosti fotogrametričnih izdelkov, ki so rezultat kompleksne izravnave bloka posnetkov in postopkov večslikovnega ujemanja, pojavi vprašanje stabilnosti parametrov notranje orientacije digitalnega fotoaparata v letalniku, ter njihov vpliv na končni izdelek. V nalogi smo uporabljali letalnik Bramor rTK, podjetja C-ASTRAL, za obdelavo posnetkov pa program Agisoft PhotoScan. Na bencinskem servisu Petrol v Vipavi je bila stabilizirana geodetska mreža 20-ih točk, ki nam je služila za kalibracijsko polje. Mrežo smo s polarno metodo izmere zgostili, da smo dobili več kontrolnih točk. Za ugotavljanje stabilnosti parametrov notranje orientacije fotoaparata, smo nad kalibracijskim poljem izvajali lete ob treh različnih terminih; vsakič dva leta, vsak na različni višini nad tlemi, vedno po istem načrtu letenja. Pridobljene posnetke smo vnesli v Agisoft PhotoScan, kjer smo z izravnavo bloka posnetkov izračunali parametre notranje in zunanje orientacije fotoaparata. Spreminjanje parametrov notranje orientacije fotoaparata smo analizirali na podlagi rezultatov izravnav posameznih testnih blokov posnetkov. Vpliv parametrov notranje orientacije fotoaparata na položajno točnost izdelkov – ortofotov in oblakov točk, smo ocenili na podlagi odstopanj na kontrolnih točkah, ki smo jih na izdelkih izmerili v programu Autocad Civil 3D. Opazovali smo tudi odstopanja izdelkov na kontrolnih točkah ob uporabi različnega števila oslonilnih točk.

Language:Slovenian
Keywords:geodezija, diplomska naloga, UNI, brezpilotni letalnik, stabilnost notranje orientacije, Agisoft Photoscan Pro, Bramor rTK
Work type:Undergraduate thesis (m5)
Tipology:2.11 - Undergraduate Thesis
Organization:FGG - Faculty of Civil and Geodetic Engineering
Year:2016
Publisher:[M. Uršič]
Number of pages:XVII, 52 str., [8] str. pril.
UDC:528.7:629.735(043.2)
COBISS.SI-ID:7654497 Link is opened in a new window
Views:1485
Downloads:474
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Secondary language

Language:English
Title:Exploring the stability of parameters of camera s internal orientation in an unmanned aerial system and their impact on positional accuracy of products
Abstract:
Unmanned aerial systems are increasingly used in geodesy and thus more and more advanced. The wish to achieve higher accuracy of photogrammetric products, which result from complex bundle block adjustments and multi-image matching, raises the question of stability of parameters of the digital camera’s internal orientation in the aerial vehicle and their impact on the final product. The Bramor rTK aerial vehicle by the company C-ASTRAL and the Agisoft PhotoScan photo processing software were used for the purpose of this thesis. A geodetic network consisting of 20 stabilised points was established at the Petrol petrol station in Vipava to provide a calibration field. The network was condensed with a polar method to obtain more control points. To determine the stability of parameters of the camera’s internal orientation, we conducted flights above the calibration field on three occasions. On every occasion, we carried out two flights, each at a different altitude, following the same flight plan. The acquired pictures were loaded to the Agisoft PhotoScan software, where internal and external camera orientation parameters were calculated through bundle block adjustments. The changing internal orientation parameters were analysed based on tests performed on different test blocks. The impact of the said parameters on the accuracy of photogrammetric products, i.e. orthophotos and point clouds, were assessed in line with control point discrepancies that were measured on the products using the Autocad Civil 3D software. Moreover, the discrepancies of the products on control points using different numbers of Ground Control Points were also observed.

Keywords:geodesy, graduation thesis, unmanned aereal vehicle, inner orientation stability, Agisoft Photoscan Pro, Bramor rTK

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