ViCo: Detail-Preserving Visual Condition for Personalized Text-to-Image
  Generation
Authors: name: Shaozhe Hao, name: Kai Han, name: Shihao Zhao, name: Kwan-Yee K. Wong

Personalized text-to-image generation using diffusion models has recently
been proposed and attracted lots of attention. Given a handful of images
containing a novel concept (e.g., a unique toy), we aim to tune the generative
model to capture fine visual details of the novel concept and generate
photorealistic images following a text condition. We present a plug-in method,
named ViCo, for fast and lightweight personalized generation. Specifically, we
propose an image attention module to condition the diffusion process on the
patch-wise visual semantics. We introduce an attention-based object mask that
comes almost at no cost from the attention module. In addition, we design a
simple regularization based on the intrinsic properties of text-image attention
maps to alleviate the common overfitting degradation. Unlike many existing
models, our method does not finetune any parameters of the original diffusion
model. This allows more flexible and transferable model deployment. With only
light parameter training (~6% of the diffusion U-Net), our method achieves
comparable or even better performance than all state-of-the-art models both
qualitatively and quantitatively.