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Covariance-preconditioned iterative methods for nonnegatively constrained astronomical imaging. (English) Zbl 1102.65044

MSC:
65F22 Ill-posedness and regularization problems in numerical linear algebra
65F10 Iterative numerical methods for linear systems
65F20 Numerical solutions to overdetermined systems, pseudoinverses
94A08 Image processing (compression, reconstruction, etc.) in information and communication theory
85-08 Computational methods for problems pertaining to astronomy and astrophysics
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