izpis_h1_title_alt

Popolni ortofoto v urbanih okoljih
ID Kosmatin Fras, Mojca (Author), ID Šušteršič, Katja (Author), ID Šašić Kežul, Aleksandar (Author)

.pdfPDF - Presentation file, Download (7,71 MB)
MD5: F7F2B3758BE110528C90B7CA762E78BC

Abstract
Popolni ortofoto je v urbanih okoljih boljši izdelek kot klasični ortofoto, ker so zgradbe na njem prikazane na pravilnem ravninskem položaju, vidna je tudi vsebina v njihovi okolici. Glavni cilj naše raziskave je bil preizkusiti dva postopka izdelave popolnega ortofota: a) postopek na podlagi digitalnega modela reliefa in digitalnega modela zgradb ter b) postopek samodejne izdelave popolnega ortofota. Raziskavo smo izvedli na dveh študijskih območjih v mestni občini Ljubljana. Oba postopka in izdelane popolne ortofote smo primerjali s klasično izdelanim ortofotom, ocenili smo tudi časovno komponento izdelave. Za popolni ortofoto potrebujemo aerofotografije z večjim prekrivanjem kot za izdelavo klasičnega ortofota, zato se čas aerofotografiranja poveča za približno 25 odstotkov. Čas obdelave, v primerjavi s postopkom izdelave klasičnega ortofota, se pri postopku samodejne izdelave popolnega ortofota zmanjša za faktor 0,75, oziroma se pri postopku izdelave popolnega ortofota na podlagi digitalnega modela reliefa in digitalnega modela zgradb poveča za faktor 2,3. Estetski videz samodejno izdelanega popolnega ortofota je nekoliko slabši le na robovih streh zgradb, ki so rahlo nazobčane. Če upoštevamo vse navedene vidike, je samodejno izdelan popolni ortofoto konkurenčen klasičnemu ortofotu.

Language:Slovenian
Keywords:popolni ortofoto, klasični ortofoto, samodejna izdelava popolnega ortofota, vektorizacija zgradb, vektorizacija zgradb, lidarski oblak točk, aerofotografiranje
Work type:Scientific work
Typology:1.02 - Review Article
Organization:FGG - Faculty of Civil and Geodetic Engineering
Publication status:Published
Publication version:Version of Record
Article acceptance date:12.01.2021
Publication date:25.02.2021
Year:2021
Number of pages:Str. 27-45
Numbering:Letn. 65, št. 1
PID:20.500.12556/RUL-132758 This link opens in a new window
UDC:528.9
ISSN on article:0351-0271
DOI:10.15292/geodetski-vestnik.2021.01.27-45 This link opens in a new window
COBISS.SI-ID:59571203 This link opens in a new window
Publication date in RUL:02.11.2021
Views:883
Downloads:119
Metadata:XML RDF-CHPDL DC-XML DC-RDF
:
Copy citation
Share:Bookmark and Share

Record is a part of a journal

Title:Geodetski vestnik. glasilo Zveze geodetov Slovenije
Shortened title:Geod. vestn.
Publisher:Zveza geodetov Slovenije
ISSN:0351-0271
COBISS.SI-ID:5091842 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:25.02.2021

Secondary language

Language:English
Title:True orthophoto in urban areas
Abstract:
True orthophoto is a better product than a classical orthophoto in urban areas, because buildings are depicted in the correct plane position, and the content around the building is also visible. The main goal of our research was to verify two approaches of a true orthophoto production: a) true orthophoto production based on digital terrain model and digital building model, and b) automatic true orthophoto production. We performed the research in two test areas within the Municipality of Ljubljana. We compared the both procedures and the produced true orthophotos with the classical orthophoto, and assessed the production time component as well. To produce true orthophoto, larger overlapping of aerial images is required, thus the time for aerial surveying is increased by approximately 25 percentage. The time of work, compared to classical orthophoto production, is lower by the factor 0.75 for automatically produced true orthophoto, and is greater by the factor 2.3 for the true orthophoto based on digital terrain model and digital building model. Aesthetic appearance of automatically produced orthophoto has only minor shortcomings on the buildings% roof edges which are slightly serrated. Considering all the mentioned aspects, the automatically produced true orthophoto is competitive with the classical orthophoto.

Keywords:true orthophoto, classical orthophoto, automatic true orthophoto production, building vectorisation, lidar point cloud, aerial surveying

Projects

Funder:ARRS - Slovenian Research Agency
Project number:P2-0406
Name:Opazovanje Zemlje in geoinformatika

Similar documents

Similar works from RUL:
Similar works from other Slovenian collections:

Back