Stable Fast 3D | ComfyUI 3D Pack

This guide provides a comprehensive introduction to creating 3D content with the 'Stable Fast 3D' model, utilizing the advanced capabilities of "ComfyUI 3D Pack" nodes to streamline workflows and enhance output quality.

Part 1: ComfyUI 3D Pack

1.1. Introduction to ComfyUI 3D Pack

ComfyUI 3D Pack is an extensive node suite that enables ComfyUI to process 3D inputs such as Mesh & UV Texture using cutting edge algorithms and models. It integrates advanced 3D processing algorithms like 3DGS (Gaussian Splatting) and NeRF (Neural Radiance Fields), along with state-of-the-art models including Hunyuan3D**,** StableFast3D, InstantMesh, CRM, TripoSR and others.

With the ComfyUI 3D Pack, users can import, manipulate and generate high quality 3D content within the intuitive ComfyUI interface. It supports a wide range of 3D file formats like OBJ, PLY, GLB enabling easy integration of existing 3D models. The pack also includes powerful mesh processing utilities to edit, clean, and optimize 3D geometry.

One of the key highlights is the integration of NeRF technology which allows photorealistic 3D reconstruction from 2D images. The 3DGS nodes enable point cloud rendering and stylization. InstantMesh and TripoSR models allow high-resolution upscaling and super-resolution of 3D meshes. CRM (Convolutional Reconstruction Model) enables recovering 3D shape from multi-view images and CCM (Color Correction Map).

ComfyUI 3D Pack was developed by , with all credit going to MrForExample. For detailed information, please see .

1.2. ComfyUI 3D Pack: Ready to Run on RunComfy

Now ComfyUI 3D Pack is fully setup and ready to use on the RunComfy website. Users don't need to install any additional software or dependencies. All the required models, algorithms and tools are pre-configured and optimized to run efficiently in the web-based ComfyUI environment.

Part 2: Using Stable Fast 3D model with ComfyUI 3D Pack Nodes

2.1. What is Stable Fast 3D?

Stable Fast 3D (SF3D) is an advanced single-view 3D mesh reconstruction technique that generates high-quality, textured 3D meshes from a single image. Stable Fast 3D builds upon the TripoSR model but incorporates several key enhancements to produce superior 3D assets suitable for various downstream applications such as gaming, e-commerce, and AR/VR.

Stable Fast 3D was developed by , with all credit going to Stability-AI. For detailed information, please see

2.2. Technical Innovations in Stable Fast 3D

Stable Fast 3D employs a novel approach that explicitly trains the model for mesh generation. It integrates a fast UV unwrapping method to enable rapid texture generation instead of relying on vertex colors. Additionally, Stable Fast 3D learns to predict material parameters and normal maps, which significantly enhance the visual quality of the reconstructed 3D meshes. A key feature of Stable Fast 3D is its delighting step, which effectively removes low-frequency illumination effects, ensuring that the generated meshes can be easily used under different lighting conditions.

2.3. Advantages/Potential Limitations of Stable Fast 3D

1. High-speed generation: Stable Fast 3D can create high-quality 3D meshes in just 0.5 seconds on an H100 GPU.
2. Illumination disentanglement: The delighting step in Stable Fast 3D removes baked-in shadows and lighting effects, making the 3D assets more versatile.
3. UV unwrapping: Stable Fast 3D's fast UV unwrapping technique enables efficient texture mapping, resulting in smaller file sizes and faster rendering compared to vertex coloring.
4. Smooth meshes: By using DMTet and learned vertex displacements with normal maps, Stable Fast 3D produces smoother mesh surfaces without Marching Cubes artifacts.
5. Material properties: Stable Fast 3D predicts non-spatially varying material properties, enhancing the visual quality of the generated objects under different illuminations.

However,Stable Fast 3D may have limitations in handling highly complex or detailed objects, as it relies on a single input image for reconstruction.

2.4. Step-by-Step Guide: Implementing the Stable Fast 3D Workflow in ComfyUI

The ComfyUI 3D Pack provides a seamless integration of the Stable Fast 3D workflow, making it easy for users to generate high-quality 3D meshes from single images. The workflow involves the following steps:

Load the pre-trained Stable Fast 3D model using the "[Comfy3D] Load SF3D Model" node.

Prepare the input image and mask using the "LoadImage" and "InvertMask" nodes.

Resize and preprocess the input image and mask using the "[Comfy3D] Resize Image Foreground" node.

Feed the preprocessed image, mask, and loaded Stable Fast 3D model into the "[Comfy3D] StableFast3D" node to generate the 3D mesh.

Adjust the mesh's axis and scale using the "[Comfy3D] Switch Mesh Axis" node if needed.

Save the generated 3D mesh and preview the final 3D mesh using the "[Comfy3D] Preview 3DMesh" node.

By leveraging the ComfyUI 3D Pack nodes, users can easily integrate the Stable Fast 3D workflow into their projects, enabling them to create high-quality, textured 3D meshes from single images with just a few clicks. This powerful combination of Stable Fast 3D and ComfyUI opens up new possibilities for AI-assisted 3D content creation, making it more accessible and efficient for artists, designers, and developers alike.

License

For detailed licensing information when using Stable Fast 3D model, please see the .