Journal
INVERSE PROBLEMS
Volume 28, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0266-5611/28/1/015012
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Funding
- BMBF (German Federal Ministry for Education and Science)
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This paper is concerned with the numerical solution of nonlinear ill-posed operator equations involving convex constraints. We study a Newton-type method which consists in applying linear Tikhonov regularization with convex constraints to the Newton equations in each iteration step. Convergence of this iterative regularization method is analyzed if both the operator and the right-hand side are given with errors and all error levels tend to zero. Our study has been motivated by the joint estimation of object and phase in 4Pi microscopy, which leads to a semi-blind deconvolution problem with nonnegativity constraints. The performance of the proposed algorithm is illustrated both for simulated and for three-dimensional experimental data.
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