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Določitev višin stavb iz lidarskih podatkov za namen izdelave popolnega ortofota : diplomska naloga
ID Ritlop, Klemen (Author), ID Kosmatin Fras, Mojca (Mentor) More about this mentor... This link opens in a new window, ID Grigillo, Dejan (Comentor)

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PID: 20.500.12556/rul/03436713-b3c2-4112-b85a-142957bcc178

Abstract
Klasični ortofoto ima kar nekaj slabosti, ki jih odpravimo v procesu izdelave popolnega ortofota. Popolni ortofoto izdelamo v nadgrajenem procesu ortorektifikacije iz letalskih posnetkov z uporabo digitalnega modela površja (DMP). DMP je sestavljen iz digitalnega modela reliefa (DMR), kateremu so dodani podatki o položaju in višinah stavb in mostov. Ti podatki so običajno shranjeni v vektorski obliki in so se v preteklosti običajno zajemali ročno iz letalskih posnetkov z metodo stereozajema. Z razvojem aerolaserskega skeniranja pa so se pojavile različne možnosti in tehnike avtomatskega zajema stavb iz lidarskih podatkov. V okviru diplomske naloge sem razvil enostaven algoritem, ki iz lidarskih podatkov pridobi višine stavb. V teoretičnem delu diplomske naloge na kratko opišem razlike med klasičnim in popolnim ortofotom, razlike v postopku izdelave ter predstavim tehnologijo aerolaserskega skeniranja. V praktičnem delu pa opišem sam algoritem in njegovo realizacijo v ESRI jevem programskem paketu ArcGIS ter primerjam ortofote izdelane na podlagi različnih digitalnih modelov površja.?

Language:Slovenian
Keywords:geodezija, diplomska dela, UNI, GIG, popolni ortofoto, podatkovna zbirka Vaihingen, višine stavb, lidar
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FGG - Faculty of Civil and Geodetic Engineering
Place of publishing:Ljubljana
Publisher:[K. Ritlop]
Year:2012
Number of pages:XII, 29 str.
PID:20.500.12556/RUL-32648 This link opens in a new window
UDC:528.7(043.2)
COBISS.SI-ID:6005345 This link opens in a new window
Publication date in RUL:10.07.2015
Views:2930
Downloads:493
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Secondary language

Language:English
Title:Extracting building heights from lidar data for the purpose of creating true orthophoto
Abstract:
Classical orthophoto has some disadvantages, which are eliminated in the process of generating true orthophoto. True orthophoto is generated from aerial photographs and digital surface model (DSM) in a process of enhanced orthorectification. DSM represents the earth's surface and includes objects like buildings and bridges. DSM data are usually stored in one of the vector file formats. In the past, DSM data were mostly acquired through process of stereoscopic data capture, but with a development of airborne laser scanning many different methods for automatic building extraction from lidar data are now available. In graduation thesis a simple algorithm for extracting building heights from lidar data was developed. In the first, theoretical part main differences between classical and true orthophoto are shortly presented as well as differences in their production line. In addition, main principles of airborne laser scanning are described. The second part treats the practical work. It contains presentation of developed algorithm, its realization in ESRI ArcGIS and evaluation of the final orthophoto results produced with different digital surface models.

Keywords:graduation thesis, geodesy, true orthophoto, Vaihingen data set, building heights, LIDAR

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