ArcPro: Architectural Programs for Structured 3D Abstraction of Sparse Points

Figure 1 . Structured 3D abstraction (bottom and top right for a zoom-in) in the form of architectural programs, obtained by our method ArcPro, which takes as input an extremely sparse point cloud (only ≈300 points) segment over each building. Despite such low-density, non-uniform, and noisy inputs, our method produces clean, low-face-count meshes that structurally conform to the real building objects. ArcPro can process 1,090 buildings over an area of 2.92 km 2 in approximately 37 seconds on a single 4090 GPU.