A digital representation of an urban environment including buildings, infrastructure, terrain, and dynamic elements, used for urban planning, simulation, gaming, and metaverse world-building based on real or imagined cities. Data standards such as CityGML (OGC), 3D Tiles, and BIM/IFC underpin interoperable city model exchange, while capture techniques including LiDAR scanning and photogrammetry feed real-world geometry into the model.
Semantic Classification
Content
Overview
- Virtual city models create detailed digital representations of urban environments for various applications from city planning to gaming. These models can represent real cities as digital twins or serve as the foundation for metaverse virtual worlds.
Technical Details
Model Components
- Building Geometry: LOD (Level of Detail) 1-4 representations
- Infrastructure: Roads, utilities, transportation
- Terrain: Elevation, land cover, water features
- Dynamic Elements: Traffic, pedestrians, weather
Data Standards
- CityGML: OGC standard for 3D city models
- 3D Tiles: Cesium streaming format
- OpenStreetMap: Crowd-sourced geographic data
- BIM/IFC: Building Information Modeling
Creation Methods
- LiDAR and photogrammetry capture
- Procedural generation algorithms
- Manual 3D modeling
- AI-assisted reconstruction
Applications
- Urban planning and simulation
- Smart city visualization
- Metaverse world-building
- Gaming environment creation
- Emergency response planning