What is Hunyuan3D-1.0
Hunyuan3D-1.0 is a 3D generation model launched by Tencent. It accepts text and image inputs and supports high-quality 3D asset generation. The model uses a two-stage approach: first, a multi-view diffusion model generates multi-view RGB images; then, a Transformer-based large-scale sparse-view reconstruction model converts these images into 3D assets. Hunyuan3D-1.0 includes a lightweight version and a standard version. The lightweight version generates quickly and is suitable for rapid 3D modeling, while the standard version generates higher-quality 3D models.
Main features of Hunyuan3D-1.0
- Text-to-3D generation: Hunyuan3D-1.0 supports generating 3D assets from text prompts. Users can enter text descriptions, and the model can generate the corresponding 3D models.
- Image-to-3D generation: The model can generate 3D models from a single image or multiple images, allowing users to guide the 3D generation process through images.
- Two-stage generation method: The model uses a two-stage method for 3D generation. The first stage is a multi-view diffusion model, which generates multi-view RGB images in about 4 seconds; the second stage is a Transformer-based large-scale sparse-view reconstruction model, which reconstructs 3D assets in about 7 seconds.
- High-quality 3D asset generation: Hunyuan3D-1.0 can generate high-quality, diverse 3D assets, including complex structures and details.
- Fast generation: Compared with other models, Hunyuan3D-1.0 has significantly improved generation speed, reducing the time required for 3D asset production.
Technical principles of Hunyuan3D-1.0
- Multi-view diffusion model: In the first stage, Hunyuan3D-1.0 uses a multi-view diffusion model to synthesize 6 new view images under fixed camera viewpoints, capturing rich details of 3D assets from different perspectives and transforming the 3D generation task from single-view reconstruction into the less difficult multi-view reconstruction task.
- Multi-view reconstruction model: In the second stage, the generated multi-view images are fed into a Transformer-based large-scale sparse-view reconstruction model. Based on the multi-view images generated in the previous stage, the reconstruction model learns to handle the noise and inconsistencies introduced by multi-view diffusion, and efficiently recovers the 3D structure using the available information in the conditional images.
- Adaptive CFG (classifer-free guidance): In the first-stage multi-view generation, the model uses adaptive CFG, setting different CFG scale values for different viewpoints and time steps to balance generation control and diversity.
- Hybrid input technology: In the second-stage multi-view reconstruction, the model combines calibrated (generated multi-view images) and uncalibrated (user input) hybrid inputs, integrating conditional image information through a dedicated view-independent branch to improve the accuracy of invisible parts in the generated images.
- High-resolution feature representation: Hunyuan3D-1.0 upsamples the resolution of the feature plane from 64 to 256 through a linear layer, making the feature representation more refined and the generated object details richer.
- Signed distance function（SDF）: The model adopts an implicit SDF representation. It uses the Marching cube algorithm to sample and query signed distance in 3D space to output a 3D mesh, which can be directly integrated with 3D pipelines.
Project address of Hunyuan3D-1.0
- Project website：3d.hunyuan.tencent.com
- Github repository：https://github.com/Tencent/Hunyuan3D-1
- HuggingFace model library：https://huggingface.co/tencent/Hunyuan3D-1
Application scenarios of Hunyuan3D-1.0
- 3D creation and game development: Hunyuan3D-1.0 can help 3D creators and artists automate the production of 3D assets, supporting the generation of 3D models from text descriptions or images, and is suitable for character, scene, and prop design in game development.
- Industrial Design: In the field of industrial design, Hunyuan3D-1.0 can be used to create three-dimensional models of various products, making it convenient for designers to design and modify them.
- Architectural Design: Hunyuan3D-1.0 can display architectural renderings, bird's-eye views, and more, helping designers and clients communicate and confirm.
- Interior Design: With Hunyuan3D-1.0, designers can create renderings, refine proposals, and more, intuitively displaying design proposals.
- Product Design: Hunyuan3D-1.0 can be used to create product structures and product display effects, helping designers present and evaluate more intuitively during the product design process.
- Engineering Design: In engineering design, Hunyuan3D-1.0 can be used to design new equipment, vehicles, structures, and more, providing engineers with intuitive 3D model support.