---
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).