Mastering Text-to-Image Diffusion: Recaptioning, Planning, and
  Generating with Multimodal LLMs
Authors: name: Ling Yang, name: Zhaochen Yu, name: Chenlin Meng, name: Minkai Xu, name: Stefano Ermon, name: Bin Cui

Diffusion models have exhibit exceptional performance in text-to-image
generation and editing. However, existing methods often face challenges when
handling complex text prompts that involve multiple objects with multiple
attributes and relationships. In this paper, we propose a brand new
training-free text-to-image generation/editing framework, namely Recaption,
Plan and Generate (RPG), harnessing the powerful chain-of-thought reasoning
ability of multimodal LLMs to enhance the compositionality of text-to-image
diffusion models. Our approach employs the MLLM as a global planner to
decompose the process of generating complex images into multiple simpler
generation tasks within subregions. We propose complementary regional diffusion
to enable region-wise compositional generation. Furthermore, we integrate
text-guided image generation and editing within the proposed RPG in a
closed-loop fashion, thereby enhancing generalization ability. Extensive
experiments demonstrate our RPG outperforms state-of-the-art text-to-image
diffusion models, including DALL-E 3 and SDXL, particularly in multi-category
object composition and text-image semantic alignment. Notably, our RPG
framework exhibits wide compatibility with various MLLM architectures (e.g.,
MiniGPT-4) and diffusion backbones (e.g., ControlNet). Our code is available
at: https://github.com/YangLing0818/RPG-DiffusionMaster