SpaceGrid-3D: Synthetic and Real Point Clouds of Spatial Grid Structures

The synthetic component pairs clean and clutter scans for 230 structures across 14 topologies, 46 member–joint combinations and five scales. It links point labels and structural instances to member connectivity, controlled geometry and observation records.Real scenes R1–R10 represent ten independent physical structures and provide manually reviewed semantic labels.

Coordinates use metres; labels 0, 1 and 2 denote background, node and member. R10 has no node-class ground truth.Four archives—Metadata, Clean, Clutter and Real—share a SpaceGrid-3D root and are extracted into the same parent directory. Paired scans and equivalent geometry groups should remain together in user-defined splits.