Sen Li, Ruochen Wang, Cho-Jui Hsieh, Minhao Cheng, Tianyi Zhou

HKUST, UCLA, PSU, UMD

Paper, Project website, Code

• MuLan with SD v1.4
• MuLan with SDXL

git clone https://github.com/measure-infinity/mulan-code
cd mulan-code
conda create -n mulan python=3.10 -y
conda activate mulan
pip install -r ./requirements.txt
pip install -e git+https://github.com/CompVis/taming-transformers.git@master#egg=taming-transformers
pip install -e git+https://github.com/openai/CLIP.git@main#egg=clip

Configuring LLaVA (default VLM in the code)

git clone https://github.com/haotian-liu/LLaVA.git
cd LLaVA
pip install -e .

Please modify you own GPT-4 API key in query.py, which is utilized for planning during the generation process. We recommend GPT-4 for the planning which is the default model in the code.

SD-v1.4

Please download the weights of Stable Diffusion v1.4 here and put it into the folder sd-models.

To generate an image with a complex prompt, first cd scripts, and then run

from pipeline_sd import mulan_sd

mulan_sd(prompt="a black headphone is on the left of a green phone", seed=42, sd_model="../sd-models/sd-v1-4-full-ema.ckpt")

seed: Random seed, prompt: User prompt

The results will be saved in outputs by default. You can easily adjust the hyper-parameters of the backward guidance, weight (110. by default) and thresh (0.15 by default), to see how the results will change.

SDXL

Please download the weights of SDXL here and put it into the folder sd-models. Currently we use DDIM sampler for the generation instead of the original one. Please replace the corresponding config files in the downloaded models with the files in sdxl_configs.

Please uninstall the library diffusers if you have one in the current environment. The code contains the modified library diffusers.

To generate an image with a complex prompt, first cd scripts, and then run

from pipeline_sdxl import mulan_sdxl

mulan_sdxl(prompt="a black headphone is on the left of a green phone", seed=42)

seed: Random seed, propmt: User prompt

The results will be saved in sdxl_outputs by default.

@misc{li2024mulan,
    title={MuLan: Multimodal-LLM Agent for Progressive Multi-Object Diffusion},
    author={Li, Sen and Wang, Ruochen and Hsieh, Cho-jui and Cheng, Minhao and Zhou, Tianyi},
    publisher={arXiv:2402.12741},
    year={2024},
}

1. Stable Diffusion
2. Backward Guidance
3. LLaVA