基于FLUS-Markov模型的国土时空一体化实景三维建模OA

In order to improve the accuracy of three-dimensional(3D)reality modeling technology and achieve precise man-agement and scientific planning of national land resources,this paper designed a 3D reality modeling method for spatiotempo-ral integration of national land based on the future land use simulation-Markov(FLUS-Markov)model.This method achieved fine division of the national land at a spatial grid scale through the conversion of raster data format and effectively extracted shadow and real-world feature areas by combining the precise calculation of solar elevation angle and shadow length.The experiment shows that the constructed 3D reality model achieves a plane accuracy error of less than 1 m and an elevation accuracy error of less than 0.1 m,significantly reducing control point errors.Through statistical analysis,it is fur-ther verified that there are significant differences in the accuracy of the plane and elevation between this method and the con-trol method,and that the method proposed in this paper has higher accuracy.The application of this method not only signifi-cantly improves the accuracy of quantitative models but also provides strong technical support for spatial planning of national land,natural resource management,and surveying and mapping geographic information industries,demonstrating broad application prospects,leading new directions in 3D modeling technology,and promoting interdisciplinary integration and innovation.