Double image encryption based on random phase encoding in the fractional Fourier domain
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A novel image encryption method is proposed by utilizing random phase encoding in the fractional Fourier domain to encrypt two images into one encrypted image with stationary white distribution that can be recovered without cross-talk.Abstract:
A novel image encryption method is proposed by utilizing random phase encoding in the fractional Fourier domain to encrypt two images into one encrypted image with stationary white distribution. By applying the correct keys which consist of the fractional orders, the random phase masks and the pixel scrambling operator, the two primary images can be recovered without cross-talk. The decryption process is robust against the loss of data. The phase-based image with a larger key space is more sensitive to keys and disturbances than the amplitude-based image. The pixel scrambling operation improves the quality of the decrypted image when noise perturbation occurs. The novel approach is verified by simulations.read more
Citations
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Optical image compression and encryption methods
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TL;DR: Optical processing methodologies, based on filtering, are described that are applicable to transmission and/or data storage and the advantages and limitations of a set of optical compression and encryption methods are discussed.
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TL;DR: A double image encryption by using random binary encoding and gyrator transform and an iterative structure composed of the random binary encode method is designed and employed for enhancing the security of encryption algorithm.
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Short-Time Fractional Fourier Transform and Its Applications
Ran Tao,Yan-Lei Li,Yue Wang +2 more
TL;DR: The short-time fractional Fourier transform (STFRFT) is proposed to solve the problem of locating the fractional fourier domain (FRFD)-frequency contents which is required in some applications and its inverse transform, properties and computational complexity are presented.
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A special attack on the asymmetric cryptosystem based on phase-truncated Fourier transforms
TL;DR: Analyzing the security of a recently proposed asymmetric cryptosystem that based on the phase-truncated Fourier transforms (PTFTs) implies that some appropriate measurements should be made to enhance the resistance of the PTFT-based cryptos system against the specific attack when it is used as a public-key cryptosSystem.
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Color image encryption by using Arnold transform and color-blend operation in discrete cosine transform domains
TL;DR: In this encryption scheme the operations mentioned above are performed twice continuously, so the parameters of Arnold transform and the random angle serve as the key of the color image encryption method.
References
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Journal ArticleDOI
Optical image encryption based on input plane and Fourier plane random encoding.
Philippe Réfrégier,Bahram Javidi +1 more
TL;DR: A new optical encoding method of images for security applications is proposed and it is shown that the encoding converts the input signal to stationary white noise and that the reconstruction method is robust.
Book
The Fractional Fourier Transform: with Applications in Optics and Signal Processing
TL;DR: The fractional Fourier transform (FFT) as discussed by the authors has been used in a variety of applications, such as matching filtering, detection, and pattern recognition, as well as signal recovery.
Journal ArticleDOI
Optical encryption by double-random phase encoding in the fractional Fourier domain.
TL;DR: An optical architecture that encodes a primary image to stationary white noise by using two statistically independent random phase codes that has an enhanced security value compared with earlier methods is proposed.
Journal ArticleDOI
Image rotation, Wigner rotation, and the fractional Fourier transform
TL;DR: In this article, the degree p = 1 is assigned to the ordinary Fourier transform and the degree P = 1/2 to the fractional transform, where p is the degree of the optical fiber.
Journal ArticleDOI
Encrypted optical memory system using three-dimensional keys in the Fresnel domain.
Osamu Matoba,Bahram Javidi +1 more
TL;DR: Encryption and decryption of optical memory in a LiNbO(3) :Fe photorefractive crystal by use of angular multiplexing is demonstrated.
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