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I would love to use point cloud data like this to make a map for a video game. What is the state of the art for turning point cloud data into 3D models? Anyone

• fsloth 2y ago
  What would the game be like? There are many ways to get as-built buildings at scale from existing datasets. For example there are cesium tiles. OSM data contains footprint polygons with height which means extrusion is trivial. To explore know production algorithms for pointcloud-to-mesh check out the ones provided in cloudcompare and meshlab and see if any fit your purpose. Afaik there is no one objectively best recipe so you need to know what you want and be aware of the tradeoffs and constraints. Note that for real time large scale cityscapes for complex buildings you likely need lods, impostors etc - which you don’t get for free. If you use just polygon extrusions you can likely bucket like a square kilometer of buildings to a drawcall (or more).
• Stevvo 2y ago
  Simplygon is used in MS Flight Simulator bcs it can generate seamless LODs. LOD 0 can simply be a Delaunay triangulation.