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UAS-noggrannhet i praktiken: En undersökning av dagens UAS-fotogrammetris noggrannhet
Karlstad University, Faculty of Arts and Social Sciences (starting 2013), Department of Geography, Media and Communication.
2013 (Swedish)Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesisAlternative title
UAS-accuracy in practice : A study of UAS photogrammetric accuracy (English)
Abstract [sv]

Sammanfattning

Undersökningens syfte är att förstå hur noggrann UAS-fotogrammetrin i dagsläget (2013) är.  Frågeställningarna som undersökningen utgick ifrån var: kan UAS-fotogrammetri i dagsläget ge precisa punkter med hjälp av att mäta in centrum av 1x1 meter utlagda plattor som kan ses i ortofoto?;  Kan det ge snarlik noggrannhet med pixelstorleken? samt Kan UAS-tekniken idag användas för att producera pålitliga höjdmodeller?

För att uppnå syftet har en undersökning utförts med jämförelse på koordinater insamlade med totalstation och insamlade med UAS-fotogrammetriska metoder. Resultatet visade att medelfelet var drygt 1 pixel på plana koordinater samt på koordinater i höjd. Pixlarnas storlek var mellan 4.7-9.3 cm. Största felkällan ser ut att vara upplösningen på bilderna, men tekniken utvecklas fort. UAS-fotogrammetrin lever väl upp till frågeställningarnas förväntningar.

Abstract [en]

Abstract

The purpose of the study is to understand what the accuracy of UAS photogrammetry today (2013) is. The study was based on the following questions: Can UAS photogrammetry today give precise points, measuring the centre of 1x1 meter plywood boards viewed from an orthophoto?; Can it give similar accuracy as the size of the pixels? And can UAS technology today be used to produce elevation models of good quality?

To investigate these questions, a study has been made to compare coordinates collected from a total station and UAS photogrammetric methods. The results show that the standard error is approximately 1 pixel on flat coordinates and 1 pixel on elevated coordinates. The pixel size was between 4.7 and 9.3 cm. The biggest source of error seems to be the resolution on the pictures, but the technology develops quickly. The UAS photogrammetry method definitely meets the expectations of the questions.

Place, publisher, year, edition, pages
2013. , 21 p.
Keyword [en]
UAS, rotoview, 3d-model, accuracy, photogrammetric, measuring, methods
Keyword [sv]
UAS, UAV, fotogrammetri, mätmetod, rotoview, Johan Lindqvist, Jakob Samani, Samani, spiker, flygsystem, noggrannhet, 3d-modell, flygplan, karlstad, Mät, UAS-fotogrammetri
National Category
Geotechnical Engineering
Identifiers
URN: urn:nbn:se:kau:diva-31010OAI: oai:DiVA.org:kau-31010DiVA: diva2:691154
External cooperation
rotoview
Educational program
Programme in Surveying and Cartography (120 ECTS credits)
Supervisors
Examiners
Available from: 2014-01-27 Created: 2014-01-27 Last updated: 2014-01-27Bibliographically approved

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CiteExportLink to record
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