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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. 11, Iss. 5 — May. 1, 1994
  • pp: 1589–1598

Reconstruction of photon-limited stellar images by generalized projections with use of the self-cross spectrum

Xiaotian Shi and Rabab K. Ward  »View Author Affiliations


JOSA A, Vol. 11, Issue 5, pp. 1589-1598 (1994)
http://dx.doi.org/10.1364/JOSAA.11.001589


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Abstract

We define self-cross correlation as the cross correlation between an image and a truncated part of it. A new method for finding tight object-support bounds by use of the self-cross-correlation information is addressed. These bounds are used in the generalized-projection method to reconstruct photon-limited atmosphere-degraded images. The iterative Fourier-transform algorithm and the generalized-projection method, with use of the autocorrelation function only, have not been preferred to the Knox–Thompson and the triple-correlation methods for phase-retrieval problems, because the use of the autocorrelation function only usually does not give tight object-support bounds. The tight-object-support-bounds constraint is crucial for the uniqueness of phase retrieval by generalized projections. We find that the information contained in the average self cross correlation gives the required tight object-support bounds. The advantage of our method over the triple-correlation method lies in the speed of computation.

© 1994 Optical Society of America

History
Original Manuscript: December 30, 1991
Revised Manuscript: September 7, 1993
Manuscript Accepted: November 9, 1993
Published: May 1, 1994

Citation
Xiaotian Shi and Rabab K. Ward, "Reconstruction of photon-limited stellar images by generalized projections with use of the self-cross spectrum," J. Opt. Soc. Am. A 11, 1589-1598 (1994)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-11-5-1589

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