FBN (Feature Binary Node)

GISBox is a one-stop 3D GIS data editing, conversion and publishing platform that supports editing in multiple GIS formats such as OSGB/GEOTIFF/RVT, converting to 3DTiles/Terrain and publishing.

Introduction

FBN file is a format used for visualization and management of 3D models and geospatial data, mainly suitable for the management and display of large-scale 3D scenes and city models. This format is optimized to efficiently load and render large volumes of data, and is widely used in fields such as GIS (Geographic Information System) and digital twins. FBN files can package and store model data, texture information, geographic coordinates, attribute data, etc., so that high-speed rendering can be achieved while maintaining 3D scene reproducibility and data consistency.

File Structure

FBN files store data in binary format and can efficiently process large amounts of 3D data. They mainly contain the following information:

**Model data (geometry): **Contains coordinate information for polygons and meshes, defining the shape of the 3D model, including vertices, normals, and face information.
Texture information: Including materials, colors, normal maps, transparency maps, etc. FBN can manage multiple textures at the same time to achieve realistic material effects.
Geospatial information: Contains GIS coordinate system information such as latitude, longitude, and altitude, which can be accurately associated with geographic locations. This allows 3D models to be presented consistently with real geographic information.
Attribute data: Stores meta information for each object (such as building name, height, structure ID, etc.), which can be used for query and filtering operations.
Compression processing: FBN files are compressed, allowing high-speed rendering while maintaining performance even when storing large-capacity models and textures.

Pros

High efficiency in data reading and display: FBN files are compressed and stored in binary format, which enables high-speed reading and rendering, and smooth display even in large-scale 3D models.
**Integrated file structure: **3D models, textures, and attribute information are stored in one file, which is easy to manage, reduces the number of files, and is easy to operate.
Highly compatible with GIS: Integrates geographic coordinate information to facilitate visualization with GIS data. In urban planning or infrastructure management, it can accurately display geographic locations.
Lightweight and high-precision: FBN files use compression algorithms to reduce data volume while maintaining high-precision 3D models. This allows for fast loading in network transmission or cloud environments.

Cons

Poor compatibility with other formats: FBN is usually a dedicated format for specific software and may not be read in general 3D editing tools or GIS software.
Difficult to edit: Since FBN uses binary compression format, it cannot be edited directly and requires the use of special tools or format conversion.
Format closedness: FBN is often a private format of a specific manufacturer and lacks public specifications, so customization and extensibility are limited.

Application Scenario

In the field of urban planning, FBN files can be used to centrally manage building models and terrain data and perform high-speed visualization to support simulation and analysis.

Example

FBN files contain geometric information of geographic features such as points, lines, and surfaces.

FBN files are used to store vector information.