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VolSplat: Rethinking Feed-Forward 3D Gaussian Splatting with Voxel-Aligned Prediction

Weijie Wang* · Yeqing Chen* · Zeyu Zhang · Hengyu Liu · Haoxiao Wang · Zhiyuan Feng · Wenkang Qin · Zheng Zhu · Donny Y. Chen · Bohan Zhuang

Paper | Project Page | Code | Models

Logo

Pixel-aligned feed-forward 3DGS methods suffer from two primary limitations: 1) 2D feature matching struggles to effectively resolve the multi-view alignment problem, and 2) the Gaussian density is constrained and cannot be adaptively controlled according to scene complexity. We propose VolSplat, a method that directly regresses Gaussians from 3D features based on a voxel-aligned prediction strategy. This approach achieves adaptive control over scene complexity and resolves the multi-view alignment challenge.

Method

Logo

Overview of VolSplat. Given multi-view images as input, we first extract 2D features for each image using a Transformer-based network and construct per-view cost volumes with plane sweeping. Depth Prediction Module then estimates a depth map for each view, which is used to unproject the 2D features into 3D space to form a voxel feature grid. Subsequently, we employ a sparse 3D decoder to refine these features in 3D space and predict the parameters of a 3D Gaussian for each occupied voxel. Finally, novel views are rendered from the predicted 3D Gaussians.

TODOs

  • Release Code.
  • Release Model Checkpoints.

Citation

If you find our work useful for your research, please consider citing us:

@article{wang2025volsplat,
  title={VolSplat: Rethinking Feed-Forward 3D Gaussian Splatting with Voxel-Aligned Prediction},
  author={Wang, Weijie and Chen, Yeqing and Zhang, Zeyu and Liu, Hengyu and Wang, Haoxiao and Feng, Zhiyuan and Qin, Wenkang and Zhu, Zheng and Chen, Donny Y. and Zhuang, Bohan},
  journal={arXiv preprint arXiv:2509.19297},
  year={2025}
}

Contact

If you have any questions, please create an issue on this repository or contact at [email protected].

Acknowledgements

This project is developed with DepthSplat. We thank the original authors for their excellent work.

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VolSplat: Rethinking Feed-Forward 3D Gaussian Splatting with Voxel-Aligned Prediction

lhmd.top/volsplat/

Topics

voxelization novel-view-synthesis gaussian-splatting feed-forward-gaussian-splatting

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