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license: other
license_name: nvidia-open-model-license
license_link: https://huggingface.co/playbox-dev/SparseQID/blob/main/LICENSE
datasets:
- nvidia/PhysicalAI-SmartSpaces
tags:
- computer-vision
- multi-object-tracking
- multi-camera-tracking
- 3d-tracking
---
# SparseQID checkpoints
Checkpoints for **Online Multi-Camera 3D Tracking via ID Prediction over
Recurrent Sparse Queries**. Source code and instructions are available at
[playbox-dev/SparseQID](https://github.com/playbox-dev/SparseQID).
The submitted model is `ngc-frozen_v128_pe30_it6k.pth`. It achieved 38.01 HOTA
on the 2026 AI City Challenge Track 1 test set.
## Download
Run from the SparseQID source repository:
```bash
hf download playbox-dev/SparseQID \
--include "checkpoints/**" \
--local-dir .
```
## Files
| Checkpoint | Use |
|---|---|
| `ngc-frozen_v128_pe30_it6k.pth` | Submitted model; frozen NGC detector |
| `ngc-joint_v128_pe30_it5k.pth` | Joint detector and identity training |
| `ngc-ft4k-frozen_v128_pe30_it8k.pth` | Frozen finetuned detector |
| `ngc-ft4k-joint_v128_pe30_it2k.pth` | Joint training with finetuned detector |
| `tok-appearance_v128_pe30_it2k.pth` | Appearance-token ablation |
| `tok-pos-fourier_v128_pe30_it2k.pth` | Fourier-position-token ablation |
| `tok-pos-raw_v128_pe30_it2k.pth` | Raw-position-token ablation |
## License
See [LICENSE](LICENSE) and [NOTICE](NOTICE).
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