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- W2163813525 abstract "The anti-reflective boundary condition for image restoration was recently introduced as a mathematically desirable alternative to other boundary conditions presently represented in the literature. It has been shown that, given a centrally symmetric point spread function (PSF), this boundary condition gives rise to a structured blurring matrix, a submatrix of which can be diagonalized by the discrete sine transform (DST), leading to an O(n2 log n) solution algorithm for an image of size n × n. In this paper, we obtain a Kronecker product approximation of the general structured blurring matrix that arises under this boundary condition, regardless of symmetry properties of the PSF. We then demonstrate the usefulness and efficiency of our approximation in an SVD-based restoration algorithm, the computational cost of which would otherwise be prohibitive. Copyright © 2005 John Wiley & Sons, Ltd." @default.
- W2163813525 created "2016-06-24" @default.
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- W2163813525 date "2006-01-01" @default.
- W2163813525 modified "2023-10-16" @default.
- W2163813525 title "Kronecker product approximations for image restoration with anti-reflective boundary conditions" @default.
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- W2163813525 doi "https://doi.org/10.1002/nla.458" @default.
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