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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 26 — Sep. 10, 2009
  • pp: 4858–4865

Adaptive watermarking scheme using a gray-level computer generated hologram

Jianzhong Li, Xiangsu Zhang, Shou Liu, and Xuechang Ren  »View Author Affiliations


Applied Optics, Vol. 48, Issue 26, pp. 4858-4865 (2009)
http://dx.doi.org/10.1364/AO.48.004858


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Abstract

We present a new adaptive blind watermarking scheme using a gray-level computer generated hologram in the discrete wavelet transform domain. By utilizing an improved fuzzy clustering technique and human visual system , the watermark can be adaptively embedded according to block classification. To keep imperceptibility and robustness, a novel iterative embedding algorithm is adopted to change the to-be-embedded coefficients. Compared with the standard Fuzzy c-means (FCM) clustering, the suggested improved FCM (IFCM) converges more quickly and can avoid local optimum effectively. The experimental results demonstrate that the proposed scheme provides good robustness to withstand different kinds of common attack. Compared with other methods, the proposed method has the distinct advantage of better robustness to a JPEG compression attack.

© 2009 Optical Society of America

OCIS Codes
(090.1760) Holography : Computer holography
(100.2000) Image processing : Digital image processing
(100.7410) Image processing : Wavelets
(110.1085) Imaging systems : Adaptive imaging

ToC Category:
Holography

History
Original Manuscript: April 21, 2009
Revised Manuscript: July 12, 2009
Manuscript Accepted: August 8, 2009
Published: September 1, 2009

Citation
Jianzhong Li, Xiangsu Zhang, Shou Liu, and Xuechang Ren, "Adaptive watermarking scheme using a gray-level computer generated hologram," Appl. Opt. 48, 4858-4865 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-26-4858


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References

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