arXiv:2505.06502eess.IVcs.CE2025-05TPAMI被引 5

让超分辨率图像符合物理规律,提升科学仿真可信度。

PC-SRGAN: Physically Consistent Super-Resolution Generative Adversarial Network for General Transient Simulations

  • 引入物理一致性约束,确保生成图像符合真实物理过程。
  • 仅用13%训练数据即达SRGAN水平,峰值信噪比与结构相似性双提升。
  • 适合需可靠模拟的科研人员,尤其时间依赖问题建模场景。

机器学习,尤其是生成对抗网络(GAN),已彻底改变超分辨率(SR)技术。然而,生成图像常缺乏物理意义,这在科学应用中至关重要。本文提出的PC-SRGAN在提升图像分辨率的同时,确保了物理一致性,使模拟结果更具可解释性。相比传统SR方法,PC-SRGAN在峰值信噪比(PSNR)和结构相似性指数(SSIM)上均有显著提升,即使训练数据极少(如仅需13%的训练数据)也能达到与SRGAN相当的性能。除超分辨率外,PC-SRGAN还推动了具有物理意义的机器学习发展,融入数值合理的时间积分器和先进质量评估指标。这些改进为科学领域提供了更可靠、具因果性的机器学习模型。相较于传统技术,其物理一致性使其成为时间相关问题的可行代理模型。本研究通过提升精度与效率,增强过程理解,并拓展至科学应用。代码与实验已公开于https://github.com/hasan-rakibul/PC-SRGAN。

原文摘要 · Abstract (English)

Machine Learning, particularly Generative Adversarial Networks (GANs), has revolutionised Super-Resolution (SR). However, generated images often lack physical meaningfulness, which is essential for scientific applications. Our approach, PC-SRGAN, enhances image resolution while ensuring physical consistency for interpretable simulations. PC-SRGAN significantly improves both the Peak Signal-to-Noise Ratio and the Structural Similarity Index Measure compared to conventional SR methods, even with limited training data (e.g., only 13% of training data is required to achieve performance similar to SRGAN). Beyond SR, PC-SRGAN augments physically meaningful machine learning, incorporating numerically justified time integrators and advanced quality metrics. These advancements promise reliable and causal machine-learning models in scientific domains. A significant advantage of PC-SRGAN over conventional SR techniques is its physical consistency, which makes it a viable surrogate model for time-dependent problems. PC-SRGAN advances scientific machine learning by improving accuracy and efficiency, enhancing process understanding, and broadening applications to scientific research. We publicly release the complete source code of PC-SRGAN and all experiments at https://github.com/hasan-rakibul/PC-SRGAN.

超分辨率物理一致科学计算GAN

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