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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 21, Iss. 10 — Oct. 1, 2004
  • pp: 1841–1854

Mistral: a myopic edge-preserving image restoration method, with application to astronomical adaptive-optics-corrected long-exposure images

Laurent M. Mugnier, Thierry Fusco, and Jean-Marc Conan  »View Author Affiliations


JOSA A, Vol. 21, Issue 10, pp. 1841-1854 (2004)
http://dx.doi.org/10.1364/JOSAA.21.001841


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Abstract

Deconvolution is a necessary tool for the exploitation of a number of imaging instruments. We describe a deconvolution method developed in a Bayesian framework in the context of imaging through turbulence with adaptive optics. This method uses a noise model that accounts for both photonic and detector noises. It additionally contains a regularization term that is appropriate for objects that are a mix of sharp edges and smooth areas. Finally, it reckons with an imperfect knowledge of the point-spread function (PSF) by estimating the PSF jointly with the object under soft constraints rather than blindly (i.e., without constraints). These constraints are designed to embody our knowledge of the PSF. The implementation of this method is called Mistral. It is validated by simulations, and its effectiveness is illustrated by deconvolution results on experimental data taken on various adaptive optics systems and telescopes. Some of these deconvolutions have already been used to derive published astrophysical interpretations.

© 2004 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(100.1830) Image processing : Deconvolution
(100.3020) Image processing : Image reconstruction-restoration
(100.3190) Image processing : Inverse problems
(110.6770) Imaging systems : Telescopes

History
Original Manuscript: August 8, 2003
Revised Manuscript: April 14, 2004
Manuscript Accepted: April 14, 2004
Published: October 1, 2004

Citation
Laurent M. Mugnier, Thierry Fusco, and Jean-Marc Conan, "Mistral: a myopic edge-preserving image restoration method, with application to astronomical adaptive-optics-corrected long-exposure images," J. Opt. Soc. Am. A 21, 1841-1854 (2004)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-21-10-1841

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