Material Anything: Generating Materials for Any 3D Object via Diffusion

Project Page | Paper

teaser_video_10M.mp4

Material Anything: A PBR material generation model for various 3D meshes, including texture-less, albedo-only, generated, and scanned objects.

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News

• [2024.12] Release Material3D Dataset and the rendering script.

Material3D Dataset (Newly Updated)

Material3D consists of 80K+ curated 3D objects with high-quality material maps and annotated text descriptions.

• Object List gives IDs for curated 3D objects in Objaverse.
• Caption List gives corresponding text descriptions of the 3D objects.
• Render Script gives Blender scripts that render 3D objects into material view-maps and material UV-maps. Refer to the following instructions for the rendering.

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Install Blender

Our Blender scripts are based on Blender 3.2.2. While newer Blender versions have been tested, some node names have changed, which may cause compatibility issues. It is recommended to install Blender 3.2.2.

# Download Blender 3.2.2
wget https://download.blender.org/release/Blender3.2/blender-3.2.2-linux-x64.tar.xz
tar -xf blender-3.2.2-linux-x64.tar.xz
rm blender-3.2.2-linux-x64.tar.xz

# Add Blender to PATH in ~/.bashrc
export PATH="/path/to/blender-folder:$PATH"

# Refresh the environment variables
source ~/.bashrc

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Material Rendering

The following commands can be used to render material maps:

Render Multi-view Material Maps

blender -b -P ./rendering_scripts/blender_script_material.py -- \
    --object_path "./my_object.glb" \
    --output_dir './dataset/outputs' \
    --render_space 'VIEW'

Render UV-space Material Maps

blender -b -P ./rendering_scripts/blender_script_material.py -- \
    --object_path "./my_object.glb" \
    --output_dir './dataset/outputs' \
    --render_space 'UV'

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Distributed Material Rendering

For large-scale rendering, we provide a distributed rendering script. You can modify it based on your dataset and system configuration.

Example Usage:

python rendering_scripts/distributed_render.py \
    --timeout 3600 \
    --num_gpus 8 \
    --workers_per_gpu 12 \
    --input_models_path './models_path_all.json' \
    --resolution 512 \
    --render_space 'VIEW'

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Notes

• Ensure that the Blender binary path is correctly added to your PATH environment variable before executing any scripts.
• For distributed rendering, adjust the --num_gpus, --workers_per_gpu, and --timeout parameters based on your hardware setup.
• Use the --render_space flag to specify whether to render in VIEW or UV space.

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Abstract

We present Material Anything, a fully-automated, unified diffusion framework designed to generate physically-based materials for 3D objects. Unlike existing methods that rely on complex pipelines or case-specific optimizations, Material Anything offers a robust, end-to-end solution adaptable to objects under diverse lighting conditions. Our approach leverages a pre-trained image diffusion model, enhanced with a triple-head architecture and rendering loss to improve stability and material quality. Additionally, we introduce confidence masks as a dynamic switcher within the diffusion model, enabling it to effectively handle both textured and texture-less objects across varying lighting conditions. By employing a progressive material generation strategy guided by these confidence masks, along with a UV-space material refiner, our method ensures consistent, UV-ready material outputs. Extensive experiments demonstrate our approach outperforms existing methods across a wide range of object categories and lighting conditions.

Overview

Overview of Material Anything. For texture-less objects, we first generate coarse textures using image diffusion models. For objects with pre-existing textures, we directly process them. Next, a material estimator progressively estimates materials for each view from a rendered image, normal, and confidence mask. The confidence mask serves as additional guidance for illuminance uncertainty, addressing lighting variations in the input image and enhancing consistency across generated multi-view materials. These materials are then unwrapped into UV space and refined by a material refiner.

Citation

If you find this work helpful for your research, please cite:

@article{huang2024materialanything,
  author = {Huang, Xin and Wang, Tengfei and Liu, Ziwei and Wang, Qing},
  title = {Material Anything: Generating Materials for Any 3D Object via Diffusion},
  journal = {arXiv preprint arXiv:2411.15138},
  year = {2024}
  }