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Bayesian approach to limited-angle reconstruction in computed tomography
1983
Journal of the Optical Society of America
An arbitrary source function cannot be determined fully from projection data that are limited in number and range of viewing angle. There exists a null subspace in the Hilbert space of possible source functions about which the available projection measurements provide no information. The null-space components of deterministic solutions are usually zero, giving rise to unavoidable artifacts. It is demonstrated that these artifacts may be reduced by a Bayesian maximum a posteriori (MAP)
doi:10.1364/josa.73.001501
fatcat:tfy2bwgib5hcrbglr65pvndmfa