Journal ArticleDOI
Information hiding based on double-random phase encoding technology
Xin Zhou,Jianguo Chen +1 more
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TLDR
A method for information hiding based on doubled-random phase encoding technology, where the real part of the encoded data is embedded into a large enough host image, together with the imaginary part through grey level superposition.Abstract:
This paper proposes a method for information hiding based on doubled-random phase encoding technology. In this method, data is split into real and imaginary compartments. The real part of the encoded data is embedded into a large enough host image, together with the imaginary part through grey level superposition. The composed image is not subject to severe degradation compared to the original host image. During the decryption process, the composed image is decrypted directly without the use of the original host image. Factors affecting the quality of the composed image as well as the reconstructed image are discussed. It is shown how optimum results are achieved by adjusting the superposition weight of the definitive host and hiding images.read more
Citations
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Journal ArticleDOI
Information hiding based on double random-phase encoding and public-key cryptography
TL;DR: A novel information hiding method based on double random-phase encoding (DRPE) and Rivest-Shamir-Adleman (RSA) public-key cryptosystem that brings security and convenience for efficient information transmission.
Journal ArticleDOI
Gray images embedded in a color image and encrypted with FRFT and Region Shift Encoding methods
Linfei Chen,Daomu Zhao,Fan Ge +2 more
TL;DR: A new multiple image encryption and watermarking technique that can be watermarked in the three channels of an enlarged color image with robustness against occlusion attacks and noise attacks is proposed.
Journal ArticleDOI
A half-blind color image hiding and encryption method in fractional Fourier domains
TL;DR: A new technique for digital image encryption and hiding based on fractional Fourier transforms with double random phases is proposed by embedding and encryption in R, G and B three channels.
Journal ArticleDOI
Digital color image watermarking based on phase-shifting interferometry and neighboring pixel value subtraction algorithm in the discrete-cosine-transform domain
Xiangfeng Meng,Lu-Zhong Cai,Xiulun Yang,Xian-Feng Xu,Guoyan Dong,X.X. Shen,Hao Zhang,Yurong Wang +7 more
TL;DR: A novel single-channel color-image watermarking with digital-optics means based on phase-shifting interferometry (PSI) and a neighboring pixel value subtraction algorithm in the discrete-cosine-transform (DCT) domain is proposed and its robustness against some types of distortion and attacks from the superposed image with different weighting factors is verified.
Journal ArticleDOI
Image watermarking based on an iterative phase retrieval algorithm and sine–cosine modulation in the discrete-cosine-transform domain
TL;DR: A novel digital image watermarking system based on an iterative phase retrieval algorithm and sine–cosine modulation in the discrete-cosine-transform (DCT) domain is proposed that can avoid the cross-talk noise due to direct information superposition and enhance the imperceptibility of hidden data.
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.
Journal ArticleDOI
Securing information by use of digital holography.
Bahram Javidi,Takanori Nomura +1 more
TL;DR: An information security method that uses a digital holographic technique that provides secure storage and data transmission and can be electrically decrypted by use of the digital hologram of the key.
Journal ArticleDOI
Digital watermarking by a holographic technique
Nobukatsu Takai,Yuto Mifune +1 more
TL;DR: It is shown that watermark information in a form of a diffuse-type Fourier-transform hologram cannot be removed by cutting it out of the host image, and it is verified by changing the weighting of the hologram relative to that of the content image.
Journal ArticleDOI
Influence of a perturbation in a double phase-encoding system
TL;DR: It is demonstrated that the amplitude signal-to-noise ratio (SNR) in the decoded image is strictly (and not only statistically) equal to the SNR in the coded image for different kinds of coded-image perturbations.
Journal ArticleDOI
Multidimensional data encryption with digital holography
Lingfeng Yu,Lilong Cai +1 more
TL;DR: Different methods of numerical reconstruction for data encryption are compared, the limitations caused by off-axis setups are discussed, and the resolution of the decrypted image could be flexibly adjusted, which makes it possible to decrypt the image with virtually no loss of data.
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Optical image encryption based on input plane and Fourier plane random encoding.
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