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• W2064878889 startingPage "045006" @default.
• W2064878889 abstract "Discrete models are consistently used as practical models for image restoration. They are piecewise constant approximations of true physical (continuous) models, and hence, inevitably impose bottleneck model errors. We propose to work directly with continuous models for image restoration aiming at suppressing the model errors caused by the discrete models. A systematic study is conducted in this paper for the continuous out-of-focus image models which can be formulated as an integral equation of the first kind. The resulting integral equation is regularized by the Lavrentiev method and the Tikhonov method. We develop fast multiscale algorithms having high accuracy to solve the regularized integral equations of the second kind. Numerical experiments show that the methods based on the continuous model perform much better than those based on discrete models, in terms of PSNR values and visual quality of the reconstructed images." @default.
• W2064878889 created "2016-06-24" @default.
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• W2064878889 date "2010-03-18" @default.
• W2064878889 modified "2023-09-26" @default.
• W2064878889 title "Integral equation models for image restoration: high accuracy methods and fast algorithms" @default.
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• W2064878889 doi "https://doi.org/10.1088/0266-5611/26/4/045006" @default.
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