OF³GS: On-the-Fly Feed-Forward 3D Gaussian Splatting from Unposed Images

Project Website | Paper | GitHub Repo

This repository hosts the official OF3GS checkpoint.

Model File

• model.ckpt: OF3GS checkpoint for inference and evaluation.

Usage

Please see the GitHub repository for installation instructions, dataset preparation, and testing commands.

The checkpoint is expected to be used with the FreeStreamGS codebase by setting:

PRE_FREEGS_PATH=/path/to/model.ckpt

or by downloading this file into:

weights/of3gs.ckpt

Citation

If you find OF3GS useful, please cite:

@article{chen2026of3gs,
  title={OF3GS: On-the-Fly Feed-Forward 3D Gaussian Splatting from Unposed Images},
  author={Chen, Ruiyang and Li, Feiran and Zhou, Chu and Li, Zonglin and Ma, Zhanyu and Guo, Heng},
  journal={arXiv preprint arXiv:2606.03254},
  year={2026}
}

License

The code and model are released under the OF3GS license. Please see the license file in the GitHub repository for details.