Seamless 3D combination for bathymetric/topographic data
Yue Chen · Journal of Dalian Maritime University · 2008
A seamless 3D combination for bathymetric/topographic data was developed to solve the problem of inconsistencies between the data in separate reference datums,different data formats and varieties of representing the same object,etc.Based on a common data obtained by the methods of transforming horizontal coordinate and interpolating vertical datums,a seamless digital elevation model(DEM) which unify the bathymetric/topographic data from discrete depths and terrain contours was established,and triangulation irregular net(TIN)simplification algorithm based on vertex decimation was used to simplify DEM in different scale.Experimental results indicate that the model can realize the 3D seamless combination for bathymetric/topographic data and multi-scale representation.