Benchmark

Do 3D Large Language Models Really Understand 3D Spatial Relationships?

Exposing language shortcuts in 3D reasoning benchmarks and introducing Real-3DQA to test whether models actually use visual geometry.

Nothing Stands Still: A Spatiotemporal Benchmark on 3D Point Cloud Registration Under Large Geometric and Temporal Change

A real-world benchmark for aligning 3D scenes across construction and renovation, with large structural and temporal changes.