Research on 3D Scene Model Construction Method Based on Multi-source Data Fusion

With the rapid development of digital cities and smart cities, the efficient construction of high-precision and high-fidelity 3D scene models has become crucial. This paper explores a method for constructing 3D geographic scene models by integrating multi-source data, specifically including BIM (Building Information Modeling) models, remote sensing imagery, and vector data. Taking a substation 3D scene model as an example, the process of building the substation scene model using CityEngine software based on multi-source data fusion is proposed. The paper elaborates on key technologies such as the processing methods of BIM models, remote sensing imagery, and vector data, data fusion, 3D modeling, and model optimization. The feasibility and effectiveness of this method are verified through a case study, providing a new approach for rapidly constructing high-precision and high-fidelity 3D scene models.