Comparison between a deterministic and a Bayesian approach in image reconstruction

Comparison between a deterministic and a Bayesian approach in image reconstruction

A comparison between two image reconstruction techniques is established. A Bayesian approach using a priori Markov fields was first implemented, and at the same time, a direct inversion resolution method was studied: the QR algorithm with a Tikhonov regularization. The aim of this paper is to compar...

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Bibliographische Detailangaben
Hauptverfasser: Bouchet, F., Lecomte, J.F., Travere, J.M., Bloyet, D.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Bayesian methods
Computed tomography
Engineering in Medicine and Biology Society
Equations
Image reconstruction
Imaging phantoms
Matrix decomposition
Singular value decomposition
Statistics
Vectors
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Beschreibung
Zusammenfassung:A comparison between two image reconstruction techniques is established. A Bayesian approach using a priori Markov fields was first implemented, and at the same time, a direct inversion resolution method was studied: the QR algorithm with a Tikhonov regularization. The aim of this paper is to compare abilities and limitations of both methods applied to emission tomography. The conclusion was that constraint introduction and flexibility lead to preference of the probabilistic approach.
DOI:10.1109/IEMBS.1996.651944