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• W2020538086 abstract "In image processing, nonconvex regularization has the ability to smooth homogeneous regions and sharpen edges but leads to challenging computation. We propose some iterative schemes to minimize the energy function with nonconvex edge-preserving potential. The schemes are derived from the duality-based algorithm proposed by Bermúdez and Moreno and the fixed point iteration. The convergence is proved for the convex energy function with nonconvex potential and the linear convergence rate is given. Applying the proposed schemes to Perona and Malik's nonconvex regularization, we present some efficient algorithms based on our schemes, and show the approximate convergence behavior for nonconvex energy function. Experimental results are presented, which show the efficiency of our algorithms, including better denoised performance of nonconvex regularization, faster convergence speed, higher calculation precision, lower calculation cost under the same number of iterations, and less implementation time under the same peak signal noise ratio level." @default.
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• W2020538086 date "2012-10-01" @default.
• W2020538086 modified "2023-09-29" @default.
• W2020538086 title "Efficient Algorithm for Nonconvex Minimization and Its Application to PM Regularization" @default.
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• W2020538086 doi "https://doi.org/10.1109/tip.2012.2208979" @default.
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