Processing and filtering of multibeam data: grid modelling versus tin based modelling
De Wulf, A.; Hennau, M.; Constales, D. (2006). Processing and filtering of multibeam data: grid modelling versus tin based modelling, in: Evolutions in hydrography, 6th - 9th November 2006, Provincial House Antwerp, Belgium: Proceedings of the 15th International Congress of the International Federation of Hydrographic Societies. Special Publication (Hydrographic Society), 55: pp. 75-79
In: (2006). Evolutions in hydrography, 6th - 9th November 2006, Provincial House Antwerp, Belgium: Proceedings of the 15th International Congress of the International Federation of Hydrographic Societies. Special Publication (Hydrographic Society), 55. International Federation of Hydrographic Society: London. 234 + cd-rom pp., meer
In: Special Publication (Hydrographic Society). Hydrographic Society: London. ISSN 0309-8303, meer
Multibeam echosounder measurements serve to make a digital terrain model (DTM) of the seafloor. The Delaunay triangulation is a widely appreciated and investigated mathematical model to represent the relief of such a terrain and is highly efficient for building triangular irregular networks out of non-homogeneous data such as raw multibeam data. However, most multibeam systems deliver equidistant interpolated data, allowing faster processing to be achieved by using equidistant grid modelling. Both approaches yield their own advantages and drawbacks. More specifically, the filtering options of TIN and grid models are quite different. An analysis of both workflows will be worked out.
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