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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. 25, Iss. 1 — Jan. 1, 2008
  • pp: 159–170

Measurement of the point-spread function of a noisy imaging system

Christopher D. Claxton and Richard C. Staunton  »View Author Affiliations


JOSA A, Vol. 25, Issue 1, pp. 159-170 (2008)
http://dx.doi.org/10.1364/JOSAA.25.000159


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Abstract

The averaged point-spread function (PSF) estimation of an image acquisition system is important for many computer vision applications, including edge detection and depth from defocus. The paper compares several mathematical models of the PSF and presents an improved measurement technique that enables subpixel estimation of 2D functions. New methods for noise suppression and uneven illumination modeling were incorporated. The PSF was computed from an ensemble of edge-spread function measurements. The generalized Gaussian was shown to be an 8 times better fit to the estimated PSF than the Gaussian and a 14 times better fit than the pillbox model.

© 2008 Optical Society of America

OCIS Codes
(110.2970) Imaging systems : Image detection systems
(110.4850) Imaging systems : Optical transfer functions
(150.5670) Machine vision : Range finding
(220.2560) Optical design and fabrication : Propagating methods
(220.4840) Optical design and fabrication : Testing
(350.4600) Other areas of optics : Optical engineering

ToC Category:
Imaging Systems

History
Original Manuscript: May 17, 2007
Revised Manuscript: September 18, 2007
Manuscript Accepted: October 2, 2007
Published: December 18, 2007

Virtual Issues
Vol. 3, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Christopher D. Claxton and Richard C. Staunton, "Measurement of the point-spread function of a noisy imaging system," J. Opt. Soc. Am. A 25, 159-170 (2008)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-25-1-159


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