How to import 3DGS scans into Isaac Sim 6.0: the silent 2^24 point cap, USD conversion, orientation fixes, trajectory cameras — plus four industrial weaknesses and mesh-based workarounds.
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Using Shibuya's scramble crossing as a case study: keep the scanner's 3DGS and mesh untouched, patch only the ground holes from measured LiDAR, stack appearance and physics as two layers, and drive a PhysX Vehicle in Isaac Sim.
