Two-dimensional optimization of Bayesian algorithms with bandlimited basis functions

• Autorzy: Chlewicki W. , Brykalski A.
• Języki publikacji: EN

Abstrakty

EN

This paper describes implementation of controlled random search procedure employed to optimize and evaluate Bayesian image reconstructions algorithms with bandlimited basis functions. Median root prior (MRP) and its generalizations, i.e. the L-filter and hybrid MRP were optimized and compared to the Huber penalty. The coefficient controlling amount/weight of the penalty and parameter controlling width ofthe bandlimited basis functions were optimized for different amounts of noise in the data. The reconstruction methods were accelerated using ordered subsets principle. Taking into account quantitative accuracy of the reconstructions, basic MRP with bandlimited basis functions is a practical altemative to the L-filter or hybrid MRP.

Słowa kluczowe

EN

iterative image reconstruction; emission tomography; Bayesian method; global optimization; maximum likelihood expectation maximization

PL

tomografia komputerowa; metoda bayesowska; optymalizacja globalna

• Wydawca: Nałęcz Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences ; Elsevier
• Czasopismo: Biocybernetics and Biomedical Engineering
• Rocznik: 2006
• Tom: Vol. 26, no. 3
• Strony: 15--32
• Opis fizyczny: Bibliogr. 45 poz., rys., tab., wykr.

Twórcy

autor

Chlewicki W.

autor

Brykalski A.

• Faculty of Electrical Engineering, Szczecin University of Technology, ul. Piastów 17, 70-310 Szczecin, Poland,

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