The invention discloses a river
topography modeling method based on data interpolation and a related device, and relates to the technical field of river
topography modeling, and the method comprises the following steps: firstly, obtaining river image data and actually measured cross section
elevation data, drawing a plurality of river lines according to the data, and then aiming at any one river line, calculating the elevation of the cross section; interpolating the river channel lines according to the
elevation data of the intersection points of the river channel lines and the two adjacent cross sections to obtain
elevation data of each interpolation point, and joining the river channel lines of the main
stream and the
branch stream at the intersection of the main
stream and the
branch stream to obtain elevation data of the river channel of the
drainage basin; and finally, based on the
watershed river channel elevation data, generating a
watershed river channel triangular mesh, and performing interpolation by using an inverse distance weighting method to obtain a high-precision
watershed river channel triangular
mesh model. According to the method, dense and uniformly distributed river
terrain elevation data can be generated based on the river cross section data and the river image data,
terrain data support is provided for modeling of the two-dimensional hydrodynamic model, and the modeling precision of the hydrodynamic model is improved.