Through-Water Dense Image Matching for Shallow Water Bathymetry
The introduction of Dense Image Matching (DIM) has reactivated the interest in photogrammetric surface mapping, as it allows the derivation of Digital Elevation Models with a spatial resolution in the range of the ground sampling distance of the aerial images. While the primary field of application is wide-area mapping of topography and urban scenes, charting bathymetry of clear and shallow water areas is equally feasible via application of multimedia photogrammetry. The article specifically investigates the potential of through-water DIM for high resolution mapping of generally low textured shallow water areas using modern techniques like semiglobal matching and off-the-shelf software. In a case study, the DIM-derived underwater surfaces of coastal and inland water bodies are compared to concurrently acquired laser bathymetry data. With an achieved penetration depth of more than 5 m and deviations in the dm-range compared to the laser data as reference, the results confirm the general feasibility of through-water DIM. However, sufficient bottom texture and favorable environmental conditions are a precondition for achieving accurate results.
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Document Type: Research Article
Publication date: June 1, 2019
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- The official journal of the American Society for Photogrammetry and Remote Sensing - the Imaging and Geospatial Information Society (ASPRS). This highly respected publication covers all facets of photogrammetry and remote sensing methods and technologies.
Founded in 1934, the American Society for Photogrammetry and Remote Sensing (ASPRS) is a scientific association serving over 7,000 professional members around the world. Our mission is to advance knowledge and improve understanding of mapping sciences to promote the responsible applications of photogrammetry, remote sensing, geographic information systems (GIS), and supporting technologies.
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