Influence of multiple scattering on the resolution of an imaging system: a Cramér-Rao analysis

We revisit the notion of resolution of an imaging system in the light of a probabilistic concept, the Cramér-Rao bound (CRB). We show that the CRB provides a simple quantitative estimation of the accuracy one can expect in measuring an unknown parameter from a scattering experiment. We then investig...

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Bibliographic Details
Published in:Optics express 2007-02, Vol.15 (3), p.1340-1347
Main Authors: Sentenac, Anne, Guérin, Charles-Antoine, Chaumet, Patrick C, Drsek, Filip, Giovannini, Hugues, Bertaux, Nicolas, Holschneider, Matthias
Format: Article
Language:English
Subjects:
Optics
Physics
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Summary:We revisit the notion of resolution of an imaging system in the light of a probabilistic concept, the Cramér-Rao bound (CRB). We show that the CRB provides a simple quantitative estimation of the accuracy one can expect in measuring an unknown parameter from a scattering experiment. We then investigate the influence of multiple scattering on the CRB for the estimation of the interdistance between two objects in a typical two-sphere scattering experiments. We show that, contrarily to a common belief, the occurence of strong multiple scattering does not automatically lead to a resolution enhancement.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.15.001340