# Third-Party Model Licenses

This project uses the following third-party models. Their original license files are included in the `licenses/` directory.

> **This project is NOT suitable for commercial use** due to the CC BY-NC 4.0 license on BRIA RMBG-2.0 and the NVIDIA Source Code License on nvdiffrast/nvdiffrec dependencies.

## Models

| Model | Source | License | Commercial Use |
|---|---|---|---|
| TRELLIS.2-4B | [microsoft/TRELLIS.2-4B](https://huggingface.co/microsoft/TRELLIS.2-4B) | MIT | Yes* |
| BRIA RMBG-2.0 | [briaai/RMBG-2.0](https://huggingface.co/briaai/RMBG-2.0) | CC BY-NC 4.0 | **No** |
| DINOv2 | [facebookresearch/dinov2](https://github.com/facebookresearch/dinov2) | Apache 2.0 | Yes |
| BiRefNet | [ZhengPeng7/BiRefNet](https://github.com/ZhengPeng7/BiRefNet) | MIT | Yes |

*\* TRELLIS.2 code and weights are MIT, but the pipeline depends on [nvdiffrast](https://github.com/NVlabs/nvdiffrast) and [nvdiffrec](https://github.com/NVlabs/nvdiffrec) (NVIDIA Source Code License), which restrict usage to non-commercial research and evaluation.*

## License Files

- [`licenses/LICENSE-TRELLIS2-MIT`](licenses/LICENSE-TRELLIS2-MIT) - Microsoft TRELLIS.2 (MIT)
- [`licenses/LICENSE-DINOV2-APACHE2`](licenses/LICENSE-DINOV2-APACHE2) - Meta DINOv2 (Apache 2.0)
- [`licenses/LICENSE-BiRefNet-MIT`](licenses/LICENSE-BiRefNet-MIT) - BiRefNet (MIT)
- [`licenses/LICENSE-RMBG2-CC-BY-NC-4.0`](licenses/LICENSE-RMBG2-CC-BY-NC-4.0) - BRIA RMBG-2.0 (CC BY-NC 4.0)

## Details

### TRELLIS.2-4B (MIT)
The main 3D generation pipeline. Code and model weights are released under the MIT License by Microsoft Corporation.

### BRIA RMBG-2.0 (CC BY-NC 4.0)
Used for automatic background removal during image preprocessing. Released under Creative Commons Attribution-NonCommercial 4.0 International. **Commercial use requires a separate paid license from [BRIA AI](https://bria.ai).**

### DINOv2 (Apache 2.0)
Vision transformer used as the image conditioning backbone. Released by Meta/Facebook Research under the Apache License 2.0.

### BiRefNet (MIT)
Bilateral Reference Network for image segmentation, used as a fallback background removal model. Released under the MIT License.