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- W1981689989 abstract "We propose a watermarking scheme for phase images, based on the use of devil’s vortex Fresnel lens (DVFL) as a phase mask. The DVFL provides much-desired parameter-rich phase masks which contribute to the enhanced security of the scheme in addition to overcoming the problem of axis alignment in the optical setup. The scheme uses gyrator transform (GT) in the input and the frequency domains to encrypt the input phase image before combining it with a host image. The scheme is validated for its efficacy, and analyzed for its sensitivity to various encryption parameters. Finally, it is examined for its robustness against occlusion and noise attacks." @default.
- W1981689989 created "2016-06-24" @default.
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- W1981689989 date "2015-06-01" @default.
- W1981689989 modified "2023-10-05" @default.
- W1981689989 title "A phase-image watermarking scheme in gyrator domain using devil's vortex Fresnel lens as a phase mask" @default.
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- W1981689989 doi "https://doi.org/10.1016/j.optcom.2015.01.019" @default.
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