ResAdapter: Domain Consistent Resolution Adapter for Diffusion Models
CoRR(2024)
Abstract
Recent advancement in text-to-image models (e.g., Stable Diffusion) and
corresponding personalized technologies (e.g., DreamBooth and LoRA) enables
individuals to generate high-quality and imaginative images. However, they
often suffer from limitations when generating images with resolutions outside
of their trained domain. To overcome this limitation, we present the Resolution
Adapter (ResAdapter), a domain-consistent adapter designed for diffusion models
to generate images with unrestricted resolutions and aspect ratios. Unlike
other multi-resolution generation methods that process images of static
resolution with complex post-process operations, ResAdapter directly generates
images with the dynamical resolution. Especially, after learning a deep
understanding of pure resolution priors, ResAdapter trained on the general
dataset, generates resolution-free images with personalized diffusion models
while preserving their original style domain. Comprehensive experiments
demonstrate that ResAdapter with only 0.5M can process images with flexible
resolutions for arbitrary diffusion models. More extended experiments
demonstrate that ResAdapter is compatible with other modules (e.g., ControlNet,
IP-Adapter and LCM-LoRA) for image generation across a broad range of
resolutions, and can be integrated into other multi-resolution model (e.g.,
ElasticDiffusion) for efficiently generating higher-resolution images. Project
link is https://res-adapter.github.io
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