ObjectAtlas Data

A prebuilt asset index and vector library for searching individual 3D objects with natural language. Descriptions from Cap3D, MARVEL-40M+, and TRELLIS-500K are grouped by asset, preserving their annotation sources and original fields.

This bundle contains metadata and description embeddings. Model files can be obtained through the download locations stored in the asset records.

Code and usage examples: ObjectAtlas on GitHub.

Contents

File	Purpose	Size
data/index.sqlite	Asset metadata, captions, and vector ID mappings	13.17 GiB
data/vectors/index.faiss	FAISS index for description retrieval	1.43 GiB
data/vectors/vectors.f32	Full precision description vectors for reranking	39.46 GiB
extra/extra.sqlite	Extra asset metadata, archive manifest, and vector ID mappings	0.14 GiB
extra/vectors/vectors.f32	Precomputed description vectors for extra assets	0.29 GiB

The five files total approximately 54.49 GiB. Keep each collection's metadata and vector files together to preserve their ID mappings.

Collection	Assets	Description vectors
Main database	1,842,649	13,792,908
Extra database	10,840	102,896

artifacts/
  README.md
  data/
    index.sqlite
    vectors/
      index.faiss
      vectors.f32
  extra/
    extra.sqlite
    vectors/
      vectors.f32

Asset metadata

The assets tables in data/index.sqlite and extra/extra.sqlite share five fields:

Field	Description
uuid	Stable local asset identifier
source_dataset	Original asset dataset, such as objaverse, objaverse_xl, or abo
original_id	Original model ID, stored as a string with leading zeros and case preserved
captions	Descriptions grouped under cap3d, marvel_40m_plus, and trellis_500k; each item contains text and the original field
download_urls	Available asset file locations; an empty list for extra assets awaiting local installation

captions and download_urls are stored as JSON text in SQLite. Missing caption sources use empty lists.

Assets are matched by their confirmed original dataset and model identity. Similar captions, names, or categories do not establish asset identity. A single asset can have multiple description vectors.

Vector format

Setting	Value
Encoder	sentence-transformers/all-mpnet-base-v2
Model revision	e8c3b32edf5434bc2275fc9bab85f82640a19130
Dimensions	768
Maximum sequence length	384 tokens
Normalization	Unit length
Raw format	Headerless, row-major, little-endian float32 (<f4)
Similarity	Cosine similarity

The SQLite captions table links vector IDs to assets and their descriptions. The vector_segments table records each raw vector segment's path, first ID, and row count. The main FAISS index uses the same caption vector IDs.

Extra collection

The extra collection contains Toys4k, OmniObject3D, and selected ShapeNet categories whose models are distributed in archives. It includes original asset metadata, official archive manifests, and precomputed description vectors. Model archives and extracted model files are not included in this bundle.

Sources and licenses

Descriptions come from Cap3D, MARVEL-40M+, and TRELLIS-500K.

Original asset source	Official resource
Objaverse / Objaverse-XL	Objaverse, Objaverse-XL metadata
ABO	Amazon Berkeley Objects
GSO	Google Scanned Objects
HSSD	HSSD models
ShapeNet	ShapeNetCore v2, ShapeNetCore GLB
Toys4k (extra)	Official project
OmniObject3D (extra)	Official project, OpenXLab

The MIT license for ObjectAtlas runtime code does not replace the licenses of the underlying data. Metadata, descriptions, models, and vectors remain subject to the applicable source licenses and attribution requirements. Cap3D annotations are listed under ODC-By, MARVEL under CC BY-NC-SA 4.0, and TRELLIS metadata under MIT; original models remain subject to their publishers' and authors' terms.

Review source licenses before using or redistributing this bundle, including any noncommercial restrictions and attribution requirements. Users are responsible for obtaining access to restricted sources such as ShapeNet and the official Toys4k downloads.