maxwildersmith/splataverse-sunshine-coast

Splataverse Sunshine Coast: Maroochydore legacy HLOD

Maroochydore, Sunshine Coast, Queensland, Australia — legacy HLOD release. The published hierarchy contains 13,510 LOD nodes, including 4,332 terminal leaves, and approximately 116 GiB of SPZ data. These are hierarchy counts: different LODs must not be summed as unique full-resolution Gaussians. The index reports 6,885,246,684 Gaussians in the terminal-node cut; the sum across all stored LODs is 27,264,190,510 alternative-representation Gaussians and must not be treated as a unique full-resolution count. The registered converted-scene envelope is approximately 0.060 km² (300.018 × 200.010 m), calculated from terminal-node x/z bounds in the source EPSG:7856 east/up/south frame. It is a small crop, not the full regional source envelope.

The newer full-provider balanced conversion has a separate Maroochydore page. City metadata · All real-city datasets

The Sunshine Coast Council's 2019 Maroochydore integrated mesh (I3S) converted to 3D Gaussian splats with the splataverse analytic mesh→3DGS converter. The converter uses a derived, hyperparameter-free density: one Gaussian lattice per face, with spacing set by the source texture resolution. The legacy release reports a median leaf texel size of 0.79 cm. The source is regional photogrammetry rendered from car-height cameras; uniformly terrestrial capture or AV-grade geometry has not been established.

Splat renders at 1.8 m eye height (1600×900, 75° FOV), 131–237M Gaussians drawn per view by the splataverse HLOD frustum renderer. Each camera was placed automatically from the splats. White areas are outside the captured area.

nodes / leaves	13,510 / 4,332 (LOD tree)
leaf texel (median)	0.79 cm
size	116 GiB (SPZ v3)
conversion	14.5 min wall, 13.75 CPU-hours
street render	131–237M Gaussians per 1600×900 view at sse 1 px

Layout

maroochydore_street/lod_index.json plus maroochydore_street/tiles/<k>/<n>.spz (SPZ v3, recentred per tile). Each index node lists its file, its world offset (add it to the tile's positions), its bounds, its Gaussian count, its geometric error in metres and its children. To render, refine nodes by screen-space error from roots down. The frame string gives the coordinate frame (Y-up, metres). layer.json / nodes.json are the original I3S layer and node metadata.

Licence and attribution

© Sunshine Coast Council 2019. Licensed under CC BY 3.0 AU. This dataset is a derived work: the mesh was converted to Gaussian splats.