MeshLex-Tokens
Per-mesh token sequence dataset for autoregressive 3D mesh generation.
Overview
Each row contains a complete mesh encoded as a token sequence with BOS/EOS delimiters. Three token formats are provided for ablation comparison.
Total meshes: 140140
Vocabulary (2372 tokens)
| Token Type | ID Range | Count |
|---|---|---|
| PAD | 0 | 1 |
| BOS | 1 | 1 |
| EOS | 2 | 1 |
| SEP | 3 | 1 |
| Position bins | 4-259 | 256 |
| Scale bins | 260-323 | 64 |
| Codebook indices | 324-2371 | 2048 |
Formats
- spatial_header_c2f: Spatial header (all positions/scales) + C2F body (codebook by level). Length: 8N+6.
- enhanced_flat: Per-patch complete tokens (pos + scale + all codebook levels). Length: 8N+2.
- enhanced_interleaved: Per-level sections with repeated spatial context. Length: 20N+5.
Schema
| Column | Type | Description |
|---|---|---|
| mesh_id | string | Unique mesh identifier |
| token_ids | list[int] | Complete token sequence |
| seq_len | int | Sequence length |
| n_patches | int | Number of patches in mesh |
| tier | string | Quality tier (gold/silver) |
Source
Built from Pthahnix/MeshLex-Patches
using VQ-VAE checkpoint pca_k2048_l4_d128 (val_recon=0.1391).
Coordinate Normalization
Per-mesh center + bounding sphere scale normalization → [-1, 1]³. Position quantization: 256 bins. Scale quantization: 64 bins. Patch ordering: Morton Z-order.