roofer

Automatic 3D building reconstruction

Design

• Core functions acessible through documented API
  • I/O functions (optional, eg GDAL, LASlib, proj)
  • Geometry processing functions
  • Validation and quantification functions (eg integration with val3dity)
  • Basic reconstruction pipeline excl I/O.
• Visual debugger built-in (polyscope?), can be disabled using compile flag
• main C++ application built on top of Core API
  • implements complete building reconstruction pipeline including I/O
  • able to scale to large inputs
  • outputs CityJSON (features)

Goals:

• easy to compile and install on all major platforms. Minimum number of preferably lightweight dependencies. Non essential dependencies should be optional.

• easy to adapt and extend (to support and encourage the exploration of new reconstruction algorithms)

• simple to use, both API and app

• bindings

• CI

pitfalls to avoid

• complexity
• unbreakable links / dependencies

CLI

$ roofer reconstruct --bid x

Related sofware

1. tyler -- for tiling of roofer output and conversion to other formats (obj, 3dtiles, gltf)
2. wallparty -- computation of party walls area + geometry
3. footprint extractor -- derive building footprints directly from lidar point cloud