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Optics Letters

Optics Letters


  • Vol. 28, Iss. 3 — Feb. 1, 2003
  • pp: 167–169

Watermarking of three-dimensional objects by digital holography

Sherif Kishk and Bahram Javidi  »View Author Affiliations

Optics Letters, Vol. 28, Issue 3, pp. 167-169 (2003)

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We present an optical method for information watermarking of three-dimensional (3D) objects by digital holography. A hidden image is embedded by double phase encoding in a phase-shift digital hologram of the 3D object. We decode the watermarked hologram to reconstruct the hidden image and the 3D object. We use either the entire hologram or a part of it to decode the hidden image. Experiments are presented to illustrate the ability to recover both the 3D object and the decoded hidden image. Digital holograms of the 3D object are obtained by optical experiments. The watermarking process, 3D object reconstruction, and hidden image recovery are performed digitally. To the best of our knowledge, this is the first report of 3D object watermarking by use of a phase encoding technique and digital holography.

© 2003 Optical Society of America

OCIS Codes
(070.4560) Fourier optics and signal processing : Data processing by optical means
(090.0090) Holography : Holography
(100.6890) Image processing : Three-dimensional image processing
(200.3050) Optics in computing : Information processing

Sherif Kishk and Bahram Javidi, "Watermarking of three-dimensional objects by digital holography," Opt. Lett. 28, 167-169 (2003)

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