Statistical Assessment of Some Interpolation Methods for Building Grid Format Digital Bathymetric Models
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URI: http://hdl.handle.net/10835/14797
DOI: https://doi.org/10.3390/rs15082072
DOI: https://doi.org/10.3390/rs15082072
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Amoroso, Pier Paolo; Aguilar Torres, Fernando José; Parente, Claudio; Aguilar Torres, Manuel ÁngelFecha
2023-04-14Resumen
As far as the knowledge of the seabed is concerned, both for safe navigation and for scientific research, 3D models, particularly digital bathymetric models (DBMs), are nowadays of fundamental importance. This work aimed to evaluate the quality of DBMs according to the interpolation methods applied to obtain grid format 3D surfaces from scattered sample points. Other complementary factors affecting DBM vertical accuracy, such as seabed morphological complexity and surveyed
points sampling density, were also analyzed by using a factorial ANOVA experimental design. The experiments were performed on a multibeam dataset provided by the Italian Navy Hydrographic Institute (IIM) with an original resolution of 1 m 1 m grid spacing, covering a surface of 0.24 km2. Six different sectors comprising different seabed morphologies were investigated. Eight sampling
densities were randomly extracted from every sector, each with four repetitions. Finally, four different interpolation methods were ...
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Remote Sensing