PRISM通过物理建模统一恢复真实雾霾图像,提升去雾可解释性。
PRISM: Rethinking Atmospheric Scattering Reconstruction as a Unified Understanding and Restoration Model for Real-world Dehazing

- 基于大气散射模型联合重建清晰图像与散射参数,增强过程可解释性。
- 在真实数据集上达到领先性能,有效处理非均匀雾霾和颜色偏移。
- 适用于缺乏成对数据的真实场景去雾,适合实际应用与研究部署。
真实世界图像去雾(RID)旨在去除真实场景中由雾霾引起的退化。由于雾霾分布不均、空间变化的颜色偏移以及成对真实雾霾-清晰图像数据稀缺,该任务仍具挑战性。在PRISM中,我们提出近似散射大气重建(PSAR),一个基于物理结构的框架,可在大气散射模型下联合重建清晰图像与散射变量,使复杂真实条件下复原过程更具可解释性。为弥合合成数据到真实数据的差距,我们设计了在线非均匀雾霾合成管道和选择性自蒸馏适配(SSDA)方案,使模型能从高质量感知目标中选择性学习,并利用其内在散射理解来检测残留雾霾并引导自我优化。在真实世界基准测试上的实验表明,PRISM在去雾任务中取得了具有竞争力的性能。
原文摘要 · Abstract (English)
Real-world image dehazing (RID) aims to remove haze-induced degradation from real scenes. This task remains challenging due to non-uniform haze distribution, spatially varying color shifts, and the scarcity of paired real hazy-clean data. In PRISM, we propose Proximal Scattering Atmosphere Reconstruction (PSAR), a physically structured framework that jointly reconstructs the clear scene and scattering variables under the atmospheric scattering model, making the restoration process more interpretable in complex real-world conditions. To bridge the synthetic-to-real gap, we design an online non-uniform haze synthesis pipeline and a Selective Self-Distillation Adaptation (SSDA) scheme for unpaired real-world scenarios, which enables the model to selectively learn from high-quality perceptual targets while leveraging its intrinsic scattering understanding to audit residual haze and guide self-refinement. Experiments on real-world benchmarks demonstrate that PRISM achieves competitive performance on RID tasks.
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