For building 3D city simulations from images, this method scales efficiently by partitioning large scenes and processing them separately, avoiding the computational explosion and geometry problems that plague existing approaches.
City-Mesh3R reconstructs large-scale city 3D meshes directly from photos using a divide-and-conquer approach. Instead of processing entire cities at once, it breaks scenes into manageable chunks, reconstructs each independently, then stitches them together—producing clean, simulation-ready meshes without the incomplete geometry or computational bottlenecks of existing methods.