2019-12-30
1 Overview
Three-dimensional geographic information is another important new development direction after GIS application network. Feiyan's three-dimensional geographic information platform integrates two modules of point cloud data display and three-dimensional scene analysis. It integrates regional data with the framework of the system platform, and builds a lightweight geographic information platform that is good at data display.
Feiyan 3D geo-information application platform is mainly composed of data acquisition layer, data resource layer, platform service layer, application layer and client layer.
Data acquisition layer: The data acquisition equipment of the three-dimensional geographic information platform is the source of data and the basic link of the platform construction. Its main function is to obtain and collect information from aerial photographs. These data acquisition devices include frame cameras, laser lidar cameras, tilt photography cameras, and more.
Data resource layer: The transmission layer is a channel for the data collection layer to communicate with and interact with the platform service layer resources. It aggregates the data obtained from the data collection layer and processes the data to achieve docking through the database and the platform service layer.
Platform service layer: The platform service layer assumes the responsibility of integrating 3D scene data and laser point cloud data resource sharing, publishing the data as a service, and adding an operation and maintenance management module.
Application layer: The application layer is to serve specific user objects such as natural resources, forestry, and water conservancy through the construction of a three-dimensional geographic information platform.
Figure 2 Point cloud data
Different from the common 2.5D three-dimensional scenes on the market, the three-dimensional modeling of Feiyan three-dimensional geographic information platform is based on the combination of large-scale maps of cities and oblique Aerial photography, and is constructed using three-dimensional modeling software. Realistic, full-view, multi-angle, simultaneous observation by multiple people, real-time interaction.
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