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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 21 — Jul. 20, 2004
  • pp: 4214–4218

Method for reduction of background artifacts of images in scanning holography with a Fresnel-zone-plate coded aperture

Ping Sun and Jing-hui Xie  »View Author Affiliations


Applied Optics, Vol. 43, Issue 21, pp. 4214-4218 (2004)
http://dx.doi.org/10.1364/AO.43.004214


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Abstract

Near-infrared scanning holography with a Fresnel zone plate (FZP) coded aperture has potential applications in imaging through turbid media. However, the nonnegative intensity-distribution function of the FZP coded aperture introduces the background artifacts into the reconstructed images, reducing the contrast and the signal-to-noise ratio (SNR) of the images. A novel method termed as the composite hologram is proposed to reduce the artifacts. The computer simulations showed that the contrast and the SNR of the reconstructed images had improvements of at least 50.2% and 5.58-dB, respectively, compared with the conventional method. The composite hologram of a metal ring with a 6.0-mm diameter made by a wire with a 0.4-mm diameter immersing in 1% intralipid solution was recorded, and the reconstruction was performed numerically. The experimental results demonstrated that the contrast and the SNR of the reconstructed image had improvements of at least 32.3% and 2.51-dB, respectively.

© 2004 Optical Society of America

OCIS Codes
(070.2590) Fourier optics and signal processing : ABCD transforms
(090.1000) Holography : Aberration compensation
(100.3010) Image processing : Image reconstruction techniques
(110.7050) Imaging systems : Turbid media
(170.0110) Medical optics and biotechnology : Imaging systems
(170.1630) Medical optics and biotechnology : Coded aperture imaging

History
Original Manuscript: June 20, 2003
Revised Manuscript: March 25, 2004
Published: July 20, 2004

Citation
Ping Sun and Jing-hui Xie, "Method for reduction of background artifacts of images in scanning holography with a Fresnel-zone-plate coded aperture," Appl. Opt. 43, 4214-4218 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-21-4214

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