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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 11, Iss. 4 — Apr. 1, 1986
  • pp: 193–195

Locally adaptive image restoration in the absence of a model for signal-dependent noise

Henri H. Arsenault and Martin Levesque  »View Author Affiliations


Optics Letters, Vol. 11, Issue 4, pp. 193-195 (1986)
http://dx.doi.org/10.1364/OL.11.000193


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Abstract

A previously published technique that combined a homomorphic transformation with a locally adaptive algorithm for image restoration in the presence of signal-dependent noise has been adapted for the case when the model for the. signal-dependent noise is unknown. The noise variance required for the homomorphic transformation is estimated from measurements over a small window, and the homomorphic transformation to make the noise additive is incorporated noise into the locally adaptive algorithm, resulting in a modified James–Stein algorithm valid for any signal- dependent noise.

© 1986 Optical Society of America

History
Original Manuscript: October 21, 1985
Manuscript Accepted: January 22, 1986
Published: April 1, 1986

Citation
Henri H. Arsenault and Martin Levesque, "Locally adaptive image restoration in the absence of a model for signal-dependent noise," Opt. Lett. 11, 193-195 (1986)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-11-4-193

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