Control Color: Multimodal Diffusion-based Interactive Image Colorization
CoRR(2024)
Abstract
Despite the existence of numerous colorization methods, several limitations
still exist, such as lack of user interaction, inflexibility in local
colorization, unnatural color rendering, insufficient color variation, and
color overflow. To solve these issues, we introduce Control Color (CtrlColor),
a multi-modal colorization method that leverages the pre-trained Stable
Diffusion (SD) model, offering promising capabilities in highly controllable
interactive image colorization. While several diffusion-based methods have been
proposed, supporting colorization in multiple modalities remains non-trivial.
In this study, we aim to tackle both unconditional and conditional image
colorization (text prompts, strokes, exemplars) and address color overflow and
incorrect color within a unified framework. Specifically, we present an
effective way to encode user strokes to enable precise local color manipulation
and employ a practical way to constrain the color distribution similar to
exemplars. Apart from accepting text prompts as conditions, these designs add
versatility to our approach. We also introduce a novel module based on
self-attention and a content-guided deformable autoencoder to address the
long-standing issues of color overflow and inaccurate coloring. Extensive
comparisons show that our model outperforms state-of-the-art image colorization
methods both qualitatively and quantitatively.
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