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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: Franco Gori
  • Vol. 28, Iss. 10 — Oct. 1, 2011
  • pp: 2014–2025

Trajectories in parallel optics

Iftach Klapp, Nir Sochen, and David Mendlovic  »View Author Affiliations


JOSA A, Vol. 28, Issue 10, pp. 2014-2025 (2011)
http://dx.doi.org/10.1364/JOSAA.28.002014


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Abstract

In our previous work we showed the ability to improve the optical system’s matrix condition by optical design, thereby improving its robustness to noise. It was shown that by using singular value decomposition, a target point-spread function (PSF) matrix can be defined for an auxiliary optical system, which works parallel to the original system to achieve such an improvement. In this paper, after briefly introducing the all optics implementation of the auxiliary system, we show a method to decompose the target PSF matrix. This is done through a series of shifted responses of auxiliary optics (named trajectories), where a complicated hardware filter is replaced by postprocessing. This process manipulates the pixel confined PSF response of simple auxiliary optics, which in turn creates an auxiliary system with the required PSF matrix. This method is simulated on two space variant systems and reduces their system condition number from 18,598 to 197 and from 87,640 to 5.75, respectively. We perform a study of the latter result and show significant improvement in image restoration performance, in comparison to a system without auxiliary optics and to other previously suggested hybrid solutions. Image restoration results show that in a range of low signal-to-noise ratio values, the trajectories method gives a significant advantage over alternative approaches. A third space invariant study case is explored only briefly, and we present a significant improvement in the matrix condition number from 1.9160 e + 013 to 34,526.

© 2011 Optical Society of America

OCIS Codes
(070.6110) Fourier optics and signal processing : Spatial filtering
(080.1010) Geometric optics : Aberrations (global)
(100.3190) Image processing : Inverse problems
(110.3010) Imaging systems : Image reconstruction techniques

ToC Category:
Fourier Optics and Signal Processing

History
Original Manuscript: March 16, 2011
Revised Manuscript: July 26, 2011
Manuscript Accepted: July 28, 2011
Published: September 9, 2011

Citation
Iftach Klapp, Nir Sochen, and David Mendlovic, "Trajectories in parallel optics," J. Opt. Soc. Am. A 28, 2014-2025 (2011)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-28-10-2014

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