tis-sft-blender — Blender-Cycles re-render of the TIS trajectory-SFT data
Multi-turn multimodal SFT parquets (verl MultiTurnSFTDataset shape) where every frame was
re-rendered with Blender Cycles GPU (OptiX, 32 spp, denoised, 640x480) at the exact camera
pose of the original Open3D-raycast trajectory: vertex-colour Principled BSDF, ambient 1.15 +
camera-point headlamp. Teacher text, poses, and action grammar are unchanged from the raycast
version — only the pixels differ (lit, shadowed, AO).
| set | train / val | scenes | convention | source bank |
|---|---|---|---|---|
multi3d_blender |
5,725 / 301 | 885 (ScanNet+ARKit+MP3D) | discrete (v9 move) | multi-domain 6k bank, per-scene cap 10 |
action_blender |
5,451 / 286 | 565 (ScanNet) | discrete | gemini_action_8k good rows (--select all; explored=799) |
zeroshot_blender |
1,970 / 103 | 402 (ScanNet) | discrete | zeroshot 2,073 bank (--select all; 93% 2-view) |
Assistant turns are truncated at </tool_call>/</answer> (70 teacher turns had hallucinated
tool responses after the closing tag; training on them teaches fabricating observations).
Files are sharded ~900MB with row_group_size=64: a single-row-group nested-image parquet
past ~2GB is unreadable (ArrowNotImplementedError) — read with row groups or iter_batches.
Gated: derived from ScanNet / ARKitScenes / Matterport3D; agree to the source datasets' terms.
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