# 解耦残差去噪扩散模型实现统一高效图像到图像翻译

- 来源：HuggingFace Daily Papers（社区热门论文）
- 发布时间：2026-05-31 14:38
- AIHOT 分数：55
- AIHOT 链接：https://aihot.virxact.com/items/cmpxp8o3c0634slck29j6deru
- 原文链接：https://arxiv.org/abs/2606.01048

## AI 摘要

DRDD 模型将扩散过程解耦为两个独立阶段：先进行随机噪声扩散以实现领域协调和流形提升，再通过确定性残差扩散在固定噪声域内学习核心语义映射。该设计保留了扩散过程对特征分布的隐式对齐能力，显著简化了跨任务统一映射的学习。噪声扩散阶段仅在未配对的目标域图像上训练，极大提升了数据效率。理论与实验表明，DRDD 与主流扩散模型兼容，即使在配对数据有限时也能实现稳健的统一翻译。代码已在 GitHub 开源。

## 正文

We propose Decoupled Residual Denoising Diffusion models (DRDD) for unified and data-efficient image-to-image (I2I) translation. While diffusion models have advanced I2I translation in terms of quality and diversity, we uncover a previously under-explored property in diffusion models. Crucially, beyond its conventional role of manifold lifting (i.e., moving data off low-dimensional manifolds), injecting Gaussian noise facilitates domain harmonization by implicitly aligning feature distributions across domains, a property particularly advantageous for unified I2I translation. However, existing diffusion models prematurely erode this harmonization effect, as noise and residuals are simultaneously removed in a single coupled diffusion process. To address this, DRDD decouples the diffusion process into two sequential and independent diffusion stages: (1) a stochastic noise diffusion for domain harmonization and manifold lifting, and (2) a deterministic residual diffusion that learns the core semantic mapping entirely within the fixed-noise domain. This decoupling preserves harmonization and manifold lifting effects throughout the transformation, substantially simplifying the learning of unified mappings across diverse tasks and domains. Notably, the noise diffusion stage is trained exclusively on abundant, unpaired target-domain images, greatly improving data efficiency. Comprehensive theoretical and empirical analysis demonstrates that DRDD is broadly compatible with mainstream diffusion models and consistently delivers robust, unified I2I translation, even under limited paired data. Our code is available at https://github.com/HKU-HealthAI/DRDD.