maxwildersmith/splataverse-cv-classic

CV-classic

Studio-lit renders of the actual balanced PLYs. The initial eleven-object sheet (SVG, PDF), teaser assets, per-object previews, additional textured previews and normal layers are also available. Geometry-only meshes use declared reference materials; previews do not implement refractive transport.

Classic graphics and vision meshes converted to 3D Gaussian splats, with balanced and uncapped CPU exports, float32 PBR attributes and source-face/barycentric provenance. Every object starts from actual mesh geometry; no image-only capture or learned mesh reconstruction is substituted.

This dataset contains derived Gaussian splats and sidecars only. Source meshes, textures and source archives are not hosted here; each object links to where its source can be downloaded, with its license and attribution (LICENSES.md, source_access in manifest.json).

This dataset is public with manual access approval. Request access here, then authenticate with your approved Hugging Face account.

Release status: 27/27 objects uploaded and remotely verified.

Object	Balanced Gaussians	Uncapped Gaussians	Material origin
Utah Teapot	65,684	478,044	assigned_reference_material
Utah Teacup	111,760	876,134	assigned_reference_material
Utah Teaspoon	32,768	109,958	assigned_reference_material
Stanford Bunny	72,570	800,803	assigned_reference_material
Stanford Armadillo	101,422	667,495	assigned_reference_material
NeRF Lego Bulldozer	2,100,190	5,241,362	original_blender_shader_graphs
DamagedHelmet	7,933,955	26,633,262	authored_gltf_pbr
FlightHelmet	11,034,440	48,455,785	authored_gltf_pbr
Blender Suzanne	31,954	453,528	assigned_reference_material
Stanford Dragon	871,246	1,198,208	assigned_reference_material
Stanford Happy Buddha	1,087,375	1,288,964	assigned_reference_material
AntiqueCamera	4,162,686	24,175,406	authored_gltf_pbr
BoomBox	2,326,908	10,684,929	authored_gltf_pbr
Avocado	36,586	12,577,514	authored_gltf_pbr
ToyCar	1,548,612	7,141,962	authored_gltf_pbr
Duck	129,482	1,983,970	authored_gltf_pbr
YCB Mustard Bottle	1,042,180	54,183,035	authored_diffuse_texture_reference_roughness
YCB Tomato Soup Can	2,425,745	39,534,867	authored_diffuse_texture_reference_roughness
YCB Cracker Box	5,683,981	44,463,205	authored_diffuse_texture_reference_roughness
YCB Banana	84,652	32,226,661	authored_diffuse_texture_reference_roughness
YCB Power Drill	882,197	25,010,955	authored_diffuse_texture_reference_roughness
NeRF Hotdog	259,515	20,918,717	original_blender_shader_graphs
NeRF Materials	1,375,512	1,925,487	original_blender_shader_graphs
NeRF Chair	964,782	3,415,059	original_blender_shader_graphs
NeRF Mic	802,161	1,072,223	original_blender_shader_graphs
NeRF Drums †	3,127,825	61,913,631	original_blender_shader_graphs
NeRF Ficus †	30,334,566	33,508,582	original_blender_shader_graphs

Download

pip install -U huggingface_hub tyro
hf auth login
hf download maxwildersmith/splataverse-cv-classic download_classic.py --repo-type dataset --local-dir cv-classic-tools
python cv-classic-tools/download_classic.py --asset stanford_bunny --profile balanced --output-dir ./CV-classic

Use --profile uncapped for the other export. --include-source prints the original source URL, license and attribution and saves them as source.json; it does not download the source, which you fetch from the upstream under its own terms. Each PLY and sidecar is independently SHA256-checked. Files are organized as source/object/object_b.ply (balanced) and source/object/object.ply (uncapped), each with .provenance.json and .validation.json, plus per-object materials.json and asset.json. The manifest records exact file paths, SHA256 identities, profile counts, source URLs, licenses and material origin. These reference objects have no train/validation/test assignment.

Profiles and material scope

Balanced uses the analytical CPU source-error recipe analytical_source_error_v1 (isotropic Gaussians): geometry resolution 128, sampled source mip-band RMS tolerance 0.03, one plan and one emission. No rendering, iterative count search or learned estimation is used.

Uncapped (uncapped_source_pbr_geometry512_v1) has no Gaussian-count budget. It samples all available native core-PBR material texel scales plus a source-extent/512 geometry-spacing floor. Geometry-only objects have no native texture resolution, so their declared geometry-spacing rule determines density.

Binary PLYs contain standard 3DGS positions, log radii, wxyz quaternion, logit opacity and SH-DC display colour, plus linear base colour, roughness, metallic, AO, linear/HDR emission, world normal, material alpha, primitive/material/source-face IDs, UVs and barycentrics. Available constant transmission/IOR/specular/clearcoat parameters are also exported. Native glTF material JSON is kept in materials.json; Blender shader graphs and preparation steps are recorded in each .provenance.json.

The Utah tea set, Stanford geometry-only scans and Suzanne receive explicitly assigned reference materials, rather than invented measured PBR. The Lego scene's pre-Principled Diffuse/Glossy/Glass shaders have a declared core-PBR projection using source parameters; exact native procedural-BSDF equivalence is not claimed. The other NeRF-synthetic scenes (NeRF Chair, NeRF Drums, NeRF Ficus, NeRF Hotdog, NeRF Materials, NeRF Mic) are exported from the same mirrored Blender files: collection instances are realized, Principled materials keep their shader with image-driven Mix/ColorRamp chains baked to plain textures and procedural bump-height chains dropped, and pre-Principled graphs are reduced to weighted BSDF lobes and projected onto core PBR (core_pbr_projection_v2; view-dependent mix factors use a declared facing-averaged weight). For Drums and Ficus, legacy MixRGB blend modes are evaluated as Blender defines them and an image-driven legacy colour chain (e.g. the red overlay on the drum-shell wood texture) is baked per texel, with its mean matched to the projected constant. Every operation and approximation is recorded per material in provenance. NeRF-synthetic Ship is not included because no downloadable source was found. Khronos materials retain their authored glTF PBR channels and optical parameters.

† Spacing-floored recipe (NeRF Drums and NeRF Ficus only). Their source textures are mapped at full resolution onto tiny parts (drum hardware, ficus leaves), so the standard recipes would plan about 141M/162M (Drums) and 408M/2.27B (Ficus) balanced/uncapped Gaussians. These two objects instead use analytical_source_error_v1_minspacing4096_edge2_aniso4 (balanced) and uncapped_source_pbr_geometry512_v1_minspacing4096_edge2_aniso4 (uncapped): the same analysis, but no sample spacing is finer than the object's largest extent / 4096 (_minspacing4096), sliver faces (thin tubes and rims) get up to 2x finer lattices along their long edge (_edge2), and Gaussians follow their lattice cell shape with an anisotropy cap of 4 (_aniso4). Their "uncapped" export is therefore spacing-floored, not texel-complete. Every other object keeps its original isotropic recipe; the recipe of each export is recorded in its .provenance.json and in manifest.json.

Every published PLY passes binary readback checks, float32 property preservation and source-face/barycentric position reconstruction against the source geometry at conversion time. These are structural/material-transfer checks, not a rendered LPIPS guarantee. Rendering and relighting evaluation remain separate from conversion. source_face_id indexes the triangles of the source mesh as prepared by the published implementation (implementation/); the provenance files record the prepared-mesh and source-geometry SHA256 so a locally rebuilt source_geometry.npz can be checked. That geometry is not hosted here.

Attribution and reuse

YCB objects transfer their provided diffuse textures. Their roughness 1 and metallic 0 are explicitly assigned reference parameters, rather than measured material channels. Toy Car also transfers authored clearcoat texture and sheen parameters; the qualitative preview shader uses core PBR lighting.

Each asset retains its original terms and credits, which also apply to the derived splats. The collection has no blanket commercial-use license: Stanford research terms, the Lego creator's noncommercial attribution terms, FreeGLUT notices and the Khronos assets' individual terms are documented in LICENSES.md. Manual access approval does not replace those terms.

Part of Splataverse.