OSA's Digital Library

Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 16, Iss. 7 — Jul. 1, 1999
  • pp: 1769–1778

Dynamics of turbulence-induced noise in image deconvolution with support constraint

Sudhakar Prasad  »View Author Affiliations


JOSA A, Vol. 16, Issue 7, pp. 1769-1778 (1999)
http://dx.doi.org/10.1364/JOSAA.16.001769


View Full Text Article

Acrobat PDF (287 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

<i>A priori</i> knowledge of the image support, often called the support constraint, when applied to a raw image formed by an imaging system leads, by means of convolution with the support spectrum, to a mixing of the spatial frequencies in the image. For a noisy raw image, such mixing causes motion of noise in its spatial-frequency spectrum. A simple model for describing the motion of atmospheric-turbulence-induced noise in the spectrum of a star image formed by a ground-based system under the application of a support constraint is presented. The transport of noise occurs in this model by a combination of ballistic motion, or drift, and diffusive spreading. For an inversion-symmetric support, the drift is absent, and noise transport is exclusively diffusive. An analytical expression for the reduction of noise that such diffusive spreading in the spatial-frequency plane can facilitate, when a circular support of arbitrary size is employed, is derived.

© 1999 Optical Society of America

OCIS Codes
(100.1830) Image processing : Deconvolution
(100.2980) Image processing : Image enhancement
(100.3010) Image processing : Image reconstruction techniques
(100.3190) Image processing : Inverse problems
(110.4280) Imaging systems : Noise in imaging systems

Citation
Sudhakar Prasad, "Dynamics of turbulence-induced noise in image deconvolution with support constraint," J. Opt. Soc. Am. A 16, 1769-1778 (1999)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-16-7-1769

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited