Thesis

Linearly guided anisotropic interpolation for bathymetric surface models

Thesis (M.S., Civil Engineering (Water Resources Engineering))--California State University, Sacramento, 2018.

Hydrodynamic models are developed by consultants, government, and researchers. With advances in computer power and software, two dimensional models are increasing in popularity. Such models can only be as good as the input data. The primary data source for a hydrodynamic model is the geometry of the terrain, or a bathymetric surface. Due to bathymetric surveying techniques, the points rarely have full coverage over the model domain and resolution. While many algorithms exist for spatial interpolation, few are tailored to the needs of a hydrodynamic model and to the geometry of bathymetric surfaces. This thesis examines existing anisotropic interpolation schemes, proposes a new approach, and demonstrates the algorithm and its results.

Hydrodynamic models are developed by consultants, government, and researchers. With advances in computer power and software, two dimensional models are increasing in popularity. Such models can only be as good as the input data. The primary data source for a hydrodynamic model is the geometry of the terrain, or a bathymetric surface. Due to bathymetric surveying techniques, the points rarely have full coverage over the model domain and resolution. While many algorithms exist for spatial interpolation, few are tailored to the needs of a hydrodynamic model and to the geometry of bathymetric surfaces. This thesis examines existing anisotropic interpolation schemes, proposes a new approach, and demonstrates the algorithm and its results.

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