Add to BibSonomyAbstract
The subject of interest is the superresolution of atmospheric-turbulence-degraded, short-exposure imagery, where superresolution refers to the removal of blur caused by a diffraction-limited optical system along with recovery of some object spatial-frequency components outside the optical passband. Photon-limited space object images are of particular interest. Two strategies based on multiple exposures are explored. The first is known as deconvolution from wave-front sensing, where estimates of the optical transfer function (OTF) associated with each exposure are derived from wave-front-sensor data. New multiframe superresolution algorithms are presented that are based on Bayesian maximum a posteriori and maximum-likelihood formulations. The second strategy is known as blind deconvolution, in which the OTF associated with each frame is unknown and must be estimated. A new multiframe blind deconvolution algorithm is presented that is based on a Bayesian maximum-likelihood formulation with strict constraints incorporated by using nonlinear reparameterizations. Quantitative simulation of imaging through atmospheric turbulence and wave-front sensing are used to demonstrate the superresolution performance of the algorithms.
© 1998 Optical Society of America
Full Article | PDF ArticleMore Like This
J. J. Green and B. R. Hunt
J. Opt. Soc. Am. A 16(12) 2859-2865 (1999)
D. R. Gerwe and M. A. Plonus
J. Opt. Soc. Am. A 15(10) 2620-2628 (1998)
Laurent M. Mugnier, Clélia Robert, Jean-Marc Conan, Vincent Michau, and Sélim Salem
J. Opt. Soc. Am. A 18(4) 862-872 (2001)