Image Authentication Using Only Partial Phase Information from a Double-Random-Phase-Encrypted Image in the Fresnel Domain
نویسندگان
چکیده
منابع مشابه
Information authentication using photon-counting double-random-phase encrypted images.
Photon-counting imaging is integrated with optical encryption for information authentication. An image is double-random-phase encrypted, and a photon-limited encrypted image is obtained. The photon-counting encrypted image is generated with few photons and appears sparse; however, we show that it has sufficient information for decryption and authentication. The decrypted image cannot be easily ...
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We propose a method of wavelength multiplexing based on a modified Gerchberg-Saxton algorithm (MGSA) and a cascaded phase modulation scheme in the Fresnel transform domain to reduce the cross talk in the multiple-image-encryption framework. First, each plain image is encoded to a complex function by using the MGSA. Next, the phase components of the created complex functions are multiplexed with...
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We present a convex optimization framework to the classical problem of image reconstruction from the modulus of its Fourier transform. Unlike the original problem, we consider the case where the phase information is not lost completely; instead, it can be roughly estimated to lie within a certain interval. Provided that the interval of uncertainty is less than π radians, our algorithm demonstra...
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ژورنال
عنوان ژورنال: Journal of the Optical Society of Korea
سال: 2015
ISSN: 1226-4776
DOI: 10.3807/josk.2015.19.3.241