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1. Environmental Protection
2. Water Engineering
3. Sustainable Urban Development
4. Roads and Railways
5. Technologies of Geodesy and Cadastre
6. Energy for Buildings
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eISSN 2029-7092 online
eISBN 978-609-457-640-9
ISBN 978-609-457-690-4 CD
Technologies of Geodesy and Cadastre

Kalev Julge, Artu Ellmann

Combining Airborne and Terrestrial Laser Scanning technologies for measuring complex structures

Conference Information: 9th International Conference “Environmental Engineering”, 22–23 May 2014, Vilnius, LITHUANIA
Source: ICEE-2014 - International Conference on Environmental Engineering
Book Series: International Conference on Environmental Engineering (ICEE) Selected papers
ISSN: eISSN 2029-7092 online
ISBN: eISBN 978-609-457-640-9
ISBN: ISBN 978-609-457-690-4 CD
Year: 2014
Publisher: Vilnius Gediminas Technical University Press Technika

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In recent years using laser scanning has gained popularity in measuring different objects, complementarily to traditional surveying and mapping methods. Terrestrial Laser Scanning (TLS) is often used for high-resolution accurate data acquisition of complex structures such as buildings, facades, etc. Airborne Laser Scanning (ALS) on the other hand can be used for remote surveying of large areas. Although TLS and ALS are generally used in separate applications, there are some possibilities where they may efficiently complement each other. In this study TLS and ALS data are combined for surveying a water tower where the façade is measured with TLS and the roof-top with standard high-elevation ALS. The advantages and shortcomings of using TLS along with ALS for measuring complex and non-standard structures are analyzed, the possible sources for errors are determined and some recommendations for methodology of field measurements and data processing in order to eliminate/reduce systematic errors are given. The estimated accuracy of combining TLS and ALS data after implementing the necessary adjustments was found to be about 5 cm.

Keywords:LIDAR; Airborne Laser Scanning; Terrestrial Laser Scanning; Point Cloud.

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