22 research outputs found
Using 3D terrestrial laser scanning as data acquisition technique for the assessment of deviations in geometry between design and as-built models of large structures : a case study
Get PDFApproach for comparing design and as built models based on data acquisition using a 3D terrestrial laser scanner, a case study
Get PDFThe virtual reconstruction of the 'Titane' archaeological site (Greece) by aims of photogrammetry
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Processing and filtering of multibeam data: grid modelling versus tin based modelling
No full textMultibeam 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
