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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 4, Iss. 3 — Mar. 1, 1987
  • pp: 438–448

Reconstruction of turbulence-degraded images using the Knox–Thompson algorithm

J. C. Fontanella and A. Sève  »View Author Affiliations

JOSA A, Vol. 4, Issue 3, pp. 438-448 (1987)

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Turbulence-degraded images can be restored by using the Knox–Thompson algorithm. This algorithm is briefly described, and its photon-noise limitations are discussed. Peculiar difficulties related to the phase dislocations in the Fourier space are pointed out, and a solution to this problem is proposed. This algorithm does not require more photons than the speckle-interferometry technique and could provide much more information on complex astronomical objects. To illustrate these phase dislocations and signal-to-noise ratio problems, different restorations are presented that result from degraded images obtained with a turbulence-simulation facility and from astronomical data.

© 1987 Optical Society of America

Original Manuscript: October 21, 1985
Manuscript Accepted: June 2, 1986
Published: March 1, 1987

J. C. Fontanella and A. Sève, "Reconstruction of turbulence-degraded images using the Knox–Thompson algorithm," J. Opt. Soc. Am. A 4, 438-448 (1987)

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