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Remote Sens. 2013, 5(12), 6382-6407; doi:10.3390/rs5126382
Article

Seamless Mapping of River Channels at High Resolution Using Mobile LiDAR and UAV-Photography

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Received: 10 October 2013 / Revised: 6 November 2013 / Accepted: 18 November 2013 / Published: 27 November 2013
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Abstract

Accurate terrain models are a crucial component of studies of river channel evolution. In this paper we describe a new methodology for creating high-resolution seamless digital terrain models (DTM) of river channels and their floodplains. We combine mobile laser scanning and low-altitude unmanned aerial vehicle (UAV) photography-based methods for creating both a digital bathymetric model of the inundated river channel and a DTM of a point bar of a meandering sub-arctic river. We evaluate mobile laser scanning and UAV-based photogrammetry point clouds against terrestrial laser scanning and combine these data with an optical bathymetric model to create a seamless DTM of two different measurement periods. Using this multi-temporal seamless data, we calculate a DTM of difference that allows a change detection of the meander bend over a one-year period.
Keywords: UAV; mobile laser scanning; LiDAR; photogrammetry; optical bathymetry; seamless DTM; DTM; elevation; river; Finland UAV; mobile laser scanning; LiDAR; photogrammetry; optical bathymetry; seamless DTM; DTM; elevation; river; Finland
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Flener, C.; Vaaja, M.; Jaakkola, A.; Krooks, A.; Kaartinen, H.; Kukko, A.; Kasvi, E.; Hyyppä, H.; Hyyppä, J.; Alho, P. Seamless Mapping of River Channels at High Resolution Using Mobile LiDAR and UAV-Photography. Remote Sens. 2013, 5, 6382-6407.

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