Physics – Optics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006josaa..23.3080b&link_type=abstract
Journal of the Optical Society of America A, vol. 23, Issue 12, pp.3080-3105
Physics
Optics
5
Atmospheric And Ocean Optics, Wave-Front Sensing, Imaging Systems, Image Quality Assessment, Noise In Imaging Systems
Scientific paper
The methodology of objective assessment, which defines image quality in terms of the performance of specific observers on specific tasks of interest, is extended to temporal sequences of images with random point spread functions and applied to adaptive imaging in astronomy. The tasks considered include both detection and estimation, and the observers are the optimal linear discriminant (Hotelling observer) and the optimal linear estimator (Wiener). A general theory of first- and second-order spatiotemporal statistics in adaptive optics is developed. It is shown that the covariance matrix can be rigorously decomposed into three terms representing the effect of measurement noise, random point spread function, and random nature of the astronomical scene. Figures of merit are developed, and computational methods are discussed.
Barrett Harrison H.
Dainty Christopher
Devaney Nicholas
Myers Kyle J.
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