Three-dimensional Geographic Information System Based on BeiDou Vision

At present, with the progress of information technology, GIS has gradually developed from two-dimensional map to three-dimensional reality. How to build a realistic 3D model is the key to build a 3D geographic information system. At the same time, the three-dimensional geographic information system also means that the amount of data processed by the system has tremendously increased. Therefore, this paper proposes the BeiDou positioning, lidar and camera data fusion technology and the technology of efficient spatial indexing and dynamic rendering for massive multi-source spatial data to build and manage 3D models more efficiently, high-quality and quickly, and realize multifunctional 3D geographic information system.