DC-ControlNet: Decoupling Inter- and Intra-Element Conditions in Image Generation with Diffusion Models

TL;DR

DC-ControlNet introduces a hierarchical, decoupled control framework for multi-condition image generation, enabling precise, flexible control over individual elements and their interactions, surpassing previous global-condition models.

Contribution

It proposes a novel decoupling approach with intra- and inter-element controllers, enhancing control flexibility and accuracy in multi-condition image generation.

Findings

Outperforms existing ControlNet models in control precision

Enables element-specific and region-specific control

Improves handling of multi-element interactions and occlusion

Abstract

In this paper, we introduce DC (Decouple)-ControlNet, a highly flexible and precisely controllable framework for multi-condition image generation. The core idea behind DC-ControlNet is to decouple control conditions, transforming global control into a hierarchical system that integrates distinct elements, contents, and layouts. This enables users to mix these individual conditions with greater flexibility, leading to more efficient and accurate image generation control. Previous ControlNet-based models rely solely on global conditions, which affect the entire image and lack the ability of element- or region-specific control. This limitation reduces flexibility and can cause condition misunderstandings in multi-conditional image generation. To address these challenges, we propose both intra-element and Inter-element Controllers in DC-ControlNet. The Intra-Element Controller handles different types of control signals within individual elements, accurately describing the content and layout characteristics of the object. For interactions between elements, we introduce the Inter-Element Controller, which accurately handles multi-element interactions and occlusion based on user-defined relationships. Extensive evaluations show that DC-ControlNet significantly outperforms existing ControlNet models and Layout-to-Image generative models in terms of control flexibility and precision in multi-condition control. Our project website is available at: https://um-lab.github.io/DC-ControlNet/