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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

  • Editor: Stephen A. Burns
  • Vol. 23, Iss. 4 — Apr. 1, 2006
  • pp: 806–815

Aspects of signal-dependent noise characterization

John J. Heine and Madhusmita Behera  »View Author Affiliations


JOSA A, Vol. 23, Issue 4, pp. 806-815 (2006)
http://dx.doi.org/10.1364/JOSAA.23.000806


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Abstract

An automated method is presented for analyzing signal-dependent noise. Signal-dependent noise is present in many types of data-acquisition processes and has been investigated by other researchers with various methods. Regardless of the noise analysis methods, often the starting point is based on a particular signal-dependent noise model, which also forms the basis for our study. The approach determines whether the estimated noise variance is dependent on the signal by approximating the functional relation within the constraints of the assumed signal–noise model. The method relies on the Fourier attributes of the signal and noise and uses the wavelet expansion for separating these components. The technique does not rely on the underlying noise and signal probability distributions. Two-dimensional simulations as well as mammography data are used to illustrate the merits of the approach.

© 2006 Optical Society of America

OCIS Codes
(100.2960) Image processing : Image analysis
(110.4280) Imaging systems : Noise in imaging systems

ToC Category:
Imaging Systems

History
Original Manuscript: May 16, 2005
Revised Manuscript: July 19, 2005
Manuscript Accepted: August 18, 2005

Virtual Issues
Vol. 1, Iss. 5 Virtual Journal for Biomedical Optics

Citation
John J. Heine and Madhusmita Behera, "Aspects of signal-dependent noise characterization," J. Opt. Soc. Am. A 23, 806-815 (2006)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-23-4-806

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