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A combined total variation and bilateral filter approach for image robust super resolution

机译:结合了总变化量和双边滤波方法的图像鲁棒超分辨率

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In this paper, we consider the image super-resolution (SR) reconstitution problem. The main goal consists of obtaining a high-resolution (HR) image from a set of low-resolution (LR) ones. For that, we propose a novel approach based on a regularized criterion. The criterion is composed of the classical generalized total variation (TV) but adding a bilateral filter (BTV) regularizer. The main goal of our approach consists of the derivation and the use of an efficient combined deblurring and denoising stage that is applied on the high-resolution image. We demonstrate the existence of minimizers of the combined variational problem in the bounded variation space, and we propose a minimization algorithm. The numerical results obtained by our approach are compared with the classical robust super-resolution (RSR) algorithm and the SR with TV regularization. They confirm that the proposed combined approach allows to overcome efficiently the blurring effect while removing the noise. Keywords Super resolution Bilateral filter Bounded variation space Total variation Function relaxed
机译:在本文中,我们考虑了图像超分辨率(SR)重构问题。主要目标包括从一组低分辨率(LR)图像中获取高分辨率(HR)图像。为此,我们提出了一种基于正则化准则的新颖方法。该标准由经典的广义总变化量(TV)组成,但增加了双边滤波器(BTV)调节器。我们方法的主要目标包括推导和使用应用于高分辨率图像的有效组合的去模糊和去噪阶段。我们证明了有界变化空间中存在组合变分问题的极小化子的存在,并提出了一种最小化算法。通过我们的方法获得的数值结果与经典鲁棒超分辨率(RSR)算法和具有TV正则化的SR进行了比较。他们证实,提出的组合方法可以在消除噪声的同时有效克服模糊效果。关键词超分辨率双边滤波器有界变化空间总变化函数松弛

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