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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. 7 — Jul. 1, 2004
  • pp: 1231–1240

Bhattacharyya distance as a contrast parameter for statistical processing of noisy optical images

François Goudail, Philippe Réfrégier, and Guillaume Delyon  »View Author Affiliations


JOSA A, Vol. 21, Issue 7, pp. 1231-1240 (2004)
http://dx.doi.org/10.1364/JOSAA.21.001231


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Abstract

In many imaging applications, the measured optical images are perturbed by strong fluctuations or noise. This can be the case, for example, for coherent-active or low-flux imagery. In such cases, the noise is not Gaussian additive and the definition of a contrast parameter between two regions in the image is not always a straightforward task. We show that for noncorrelated noise, the Bhattacharyya distance can be an efficient candidate for contrast definition when one uses statistical algorithms for detection, location, or segmentation. We demonstrate with numerical simulations that different images with the same Bhattacharyya distance lead to equivalent values of the performance criterion for a large number of probability laws. The Bhattacharyya distance can thus be used to compare different noisy situations and to simplify the analysis and the specification of optical imaging systems.

© 2004 Optical Society of America

OCIS Codes
(030.0030) Coherence and statistical optics : Coherence and statistical optics
(030.4280) Coherence and statistical optics : Noise in imaging systems

History
Original Manuscript: November 7, 2003
Revised Manuscript: January 29, 2004
Manuscript Accepted: January 29, 2004
Published: July 1, 2004

Citation
François Goudail, Philippe Réfrégier, and Guillaume Delyon, "Bhattacharyya distance as a contrast parameter for statistical processing of noisy optical images," J. Opt. Soc. Am. A 21, 1231-1240 (2004)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-21-7-1231


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