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arXiv 2604.08922cs.CV

抗退化融合:一种高效的抗退化扩散框架,用于任意退化场景下的多模态图像融合

Degradation-Robust Fusion: An Efficient Degradation-Aware Diffusion Framework for Multimodal Image Fusion in Arbitrary Degradation Scenarios

Department of Biomedical Engineering, Hefei University of Technology(合肥工业大学生物医学工程系);Faculty of Information Engineering and Automation, Kunming University of Science and Technology(昆明理工大学信息工程与自动化学院);School of Information Science and Technology, University of Science and Technology of China(中国科学技术大学信息科学技术学院)

Yu Shi, Yu Liu, Zhong-Cheng Wu, Juan Cheng, Huafeng Li, Xun Chen

AI总结:

本文提出一种高效的抗退化扩散框架,用于处理多模态图像融合中的复杂退化场景。该框架通过隐式去噪和联合观测模型校正机制,提升了在复杂退化下的融合性能。

摘要:

复杂的退化如噪声、模糊和低分辨率是现实世界图像融合任务中的典型挑战,限制了现有方法的性能和实用性。端到端神经网络方法通常易于设计且推理高效,但其黑盒性质导致可解释性有限。基于扩散的方法在一定程度上缓解了这一问题,通过提供强大的生成先验和更结构化的推理过程。然而,它们被训练以学习单一域的目标分布,而融合缺乏自然融合数据,依赖于从多个来源建模互补信息,使扩散在实践中难以直接应用。为了解决这些挑战,本文提出了一种高效的抗退化扩散框架,用于在任意退化场景下的图像融合。具体而言,与传统扩散模型显式预测噪声不同,我们的方法通过直接回归融合图像进行隐式去噪,使在复杂退化下灵活适应多种融合任务成为可能,且仅需有限步骤。此外,我们设计了一个联合观测模型校正机制,在采样过程中同时施加退化和融合约束,以确保高重建精度。在多样化的融合任务和退化配置上的实验表明,所提出的方法在复杂退化场景下具有优越性。

英文摘要:

Complex degradations like noise, blur, and low resolution are typical challenges in real world image fusion tasks, limiting the performance and practicality of existing methods. End to end neural network based approaches are generally simple to design and highly efficient in inference, but their black-box nature leads to limited interpretability. Diffusion based methods alleviate this to some extent by providing powerful generative priors and a more structured inference process. However, they are trained to learn a single domain target distribution, whereas fusion lacks natural fused data and relies on modeling complementary information from multiple sources, making diffusion hard to apply directly in practice. To address these challenges, this paper proposes an efficient degradation aware diffusion framework for image fusion under arbitrary degradation scenarios. Specifically, instead of explicitly predicting noise as in conventional diffusion models, our method performs implicit denoising by directly regressing the fused image, enabling flexible adaptation to diverse fusion tasks under complex degradations with limited steps. Moreover, we design a joint observation model correction mechanism that simultaneously imposes degradation and fusion constraints during sampling to ensure high reconstruction accuracy. Experiments on diverse fusion tasks and degradation configurations demonstrate the superiority of the proposed method under complex degradation scenarios.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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