Connotation of Real Scene 3D Data

May 23, 2023

The three-dimensional world is different from the two-dimensional world: the two-dimensional world is a flat world with only length and width, while the three-dimensional world is a three-dimensional world with length, width and height, which is also the space in which we humans live. Therefore, describing the world in a three-dimensional form is what human beings have always pursued, and it is more in line with the needs of modern government governance. In the past, limited by technology, means, storage and computing power, most of them could only express the objective world based on a two-dimensional plane.

Real-world 3D data has the characteristics of materialization, individualization, semantics, and structure. It is a non-scale, full-element data set that expresses spatial relationships and attribute information. The construction of Real-Scene 3D China includes three-level construction of terrain level, city level and component level, and its data system is shown in the table below. Among them, the terrain-level real-scene 3D scene reflects the terrain undulations and ground texture characteristics, which can be used for the large-scale scene and 3D visualization expression of the current situation of natural resources and the geographical pattern of natural resources; the city-level real-scene 3D scene reflects the real situation of the urban surface, and can be used for the fine-grained expression of natural resources ; Component-level real scene 3D scene reflects the position, geometric shape, spatial relationship and attributes of entity elements in three-dimensional space, mainly based on building information model data (BIM), which can be used for personalized applications.

BIM model

For different business applications, Feiyan Remote Sensing is based on 3D GIS software such as Virtual Geo, ArcGIS, SuperMap, Cesium, massive multi-source data fusion, 3D spatial analysis and customized application services, which can provide high-quality, A comprehensive true 3D real-scene geographic information system application platform.