arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2009.11380eess.IVcs.NAmath.NA
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基于ADMM的加权全变分和深度图像先验融合自然和医学图像恢复

Combining Weighted Total Variation and Deep Image Prior for natural and medical image restoration via ADMM

Pasquale Cascarano, Andrea Sebastiani, Maria Colomba Comes, Giorgia Franchini, Federica Porta

摘要:

在过去的几十年里,基于无监督深度学习的方法引起了研究人员的注意,因为在许多实际应用中,例如医学成像,收集大量的训练样本并不总是可行的。此外,构建一个好的训练集是耗时和困难的,因为所选择的数据必须具有足够的代表性。在本文中,我们专注于深度图像先验(DIP)框架,并建议将其与具有局部正则化参数自动估计的空间变全变差正则化器相结合。与现有的方法不同,我们通过灵活的交替方向乘法(ADMM)来解决所产生的最小化问题。此外,我们还提供了一个具体的实现标准的各向同性全变分。所提出的方法,在PSNR和SSIM值方面,有前途的性能,通过模拟以及真实的自然和医疗损坏的图像的几个实验解决。

英文摘要:

In the last decades, unsupervised deep learning based methods have caught researchers attention, since in many real applications, such as medical imaging, collecting a great amount of training examples is not always feasible. Moreover, the construction of a good training set is time consuming and hard because the selected data have to be enough representative for the task. In this paper, we focus on the Deep Image Prior (DIP) framework and we propose to combine it with a space-variant Total Variation regularizer with an automatic estimation of the local regularization parameters. Differently from other existing approaches, we solve the arising minimization problem via the flexible Alternating Direction Method of Multipliers (ADMM). Furthermore, we provide a specific implementation also for the standard isotropic Total Variation. The promising performances of the proposed approach, in terms of PSNR and SSIM values, are addressed through several experiments on simulated as well as real natural and medical corrupted images.

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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