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Applied Optics

Applied Optics


  • Vol. 43, Iss. 7 — Mar. 1, 2004
  • pp: 1552–1558

Hiding an image with a light-scattering medium and use of a contrast-discrimination method for readout

Yoshio Hayasaki, Yoshiaki Matsuba, Atsushi Nagaoka, Hirotsugu Yamamoto, and Nobuo Nishida  »View Author Affiliations

Applied Optics, Vol. 43, Issue 7, pp. 1552-1558 (2004)

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Hiding image data with a material such as a light-scattering medium is useful as an initial stage of data protection, because the hidden image can be detected only by observation with a specific technique. A light-scattering medium is used to hide the image data, and a low-temporal-coherence interferometer performs the readout processing. A new readout method for detecting pixel values of the image is proposed to overcome spatial variation of the light intensity and distortion of the interference fringes. The introduction of spatial coding further improves the performance by overcoming spatial variations of the light-scattering medium and variations in the reflectance of given pixels.

© 2004 Optical Society of America

OCIS Codes
(070.4560) Fourier optics and signal processing : Data processing by optical means
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(170.1650) Medical optics and biotechnology : Coherence imaging
(200.3050) Optics in computing : Information processing

Original Manuscript: August 4, 2003
Published: March 1, 2004

Yoshio Hayasaki, Yoshiaki Matsuba, Atsushi Nagaoka, Hirotsugu Yamamoto, and Nobuo Nishida, "Hiding an image with a light-scattering medium and use of a contrast-discrimination method for readout," Appl. Opt. 43, 1552-1558 (2004)

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