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Data Processing and Quality Evaluation of a Boat-Based Mobile Laser Scanning System
Department of Real Estate, Planning and Geoinformatics, Aalto University, Aalto FI-00076, Finland
Department of Remote Sensing and Photogrammetry, Finnish Geodetic Institute, P.O. Box 15, Masala FI-02431, Finland
Department of Geography and Geology, University of Turku, Turku FI-20014, Finland
Civil Engineering and Building Services, Helsinki Metropolia University of Applied Sciences, Metropolia FI-00079, Finland
Department of Civil and Environmental Engineering, Aalto University, Aalto FI-00076, Finland
* Author to whom correspondence should be addressed.
Received: 7 August 2013; in revised form: 5 September 2013 / Accepted: 10 September 2013 / Published: 17 September 2013
Abstract: Mobile mapping systems (MMSs) are used for mapping topographic and urban features which are difficult and time consuming to measure with other instruments. The benefits of MMSs include efficient data collection and versatile usability. This paper investigates the data processing steps and quality of a boat-based mobile mapping system (BoMMS) data for generating terrain and vegetation points in a river environment. Our aim in data processing was to filter noise points, detect shorelines as well as points below water surface and conduct ground point classification. Previous studies of BoMMS have investigated elevation accuracies and usability in detection of fluvial erosion and deposition areas. The new findings concerning BoMMS data are that the improved data processing approach allows for identification of multipath reflections and shoreline delineation. We demonstrate the possibility to measure bathymetry data in shallow (0–1 m) and clear water. Furthermore, we evaluate for the first time the accuracy of the BoMMS ground points classification compared to manually classified data. We also demonstrate the spatial variations of the ground point density and assess elevation and vertical accuracies of the BoMMS data.
Keywords: mobile laser scanning; ground point classification; data processing; digital elevation model; filtering; river survey; fluvial geomorphology
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Cite This Article
MDPI and ACS Style
Vaaja, M.; Kukko, A.; Kaartinen, H.; Kurkela, M.; Kasvi, E.; Flener, C.; Hyyppä, H.; Hyyppä, J.; Järvelä, J.; Alho, P. Data Processing and Quality Evaluation of a Boat-Based Mobile Laser Scanning System. Sensors 2013, 13, 12497-12515.
Vaaja M, Kukko A, Kaartinen H, Kurkela M, Kasvi E, Flener C, Hyyppä H, Hyyppä J, Järvelä J, Alho P. Data Processing and Quality Evaluation of a Boat-Based Mobile Laser Scanning System. Sensors. 2013; 13(9):12497-12515.
Vaaja, Matti; Kukko, Antero; Kaartinen, Harri; Kurkela, Matti; Kasvi, Elina; Flener, Claude; Hyyppä, Hannu; Hyyppä, Juha; Järvelä, Juha; Alho, Petteri. 2013. "Data Processing and Quality Evaluation of a Boat-Based Mobile Laser Scanning System." Sensors 13, no. 9: 12497-12515.