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ADAPTIVE TOTAL VARIATION IMAGE DECONVOLUTION: A MAJORIZATION-MINIMIZATION APPROACH

机译:自适应总变化图像去卷积:一种最小化方法

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This paper proposes a new algorithm for total variation (TV) image deconvolution under the assumptions of linear observations and additive white Gaussian noise. By adopting a Bayesian point of view, the regularization parameter, modeled with a Jeffreys’ prior, is integrated out. Thus, the resulting crietrion adapts itself to the data and the critical issue of selecting the regularization parameter is sidestepped. To implement the resulting criterion, we propose a majorization-minimization approach, which consists in replacing a difficult optimization problem with a sequence of simpler ones. The computational complexity of the proposed algorithm is O(N) for finite support convolutional kernels. The results are competitive with recent state-of-the-art methods.
机译:在线性观测和加性高斯白噪声假设的基础上,本文提出了一种新的总变化(TV)图像反卷积算法。通过采用贝叶斯的观点,可以整合以Jeffreys先验为模型的正则化参数。因此,最终的crietrion使自己适应数据,并且避免了选择正则化参数的关键问题。为了实现结果准则,我们提出了一种主化最小化方法,该方法包括用一系列较简单的问题代替困难的优化问题。对于有限支持卷积核,该算法的计算复杂度为O(N)。结果与最新技术水平相比具有竞争力。

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