Visual cryptography in single-pixel imaging

Jiao, Shuming; Feng, Jun; Gao, Yang; Lei, Ting; Yuan, Xiaocong

doi:10.1364/oe.383240

Cited by 117 publications

(38 citation statements)

References 40 publications

(64 reference statements)

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“…But in the concept we proposing that will work on both the colour and black & white images and shadow image of the proposed scheme looks like as a single colour paper and no hacker or the people who is aware of this concept can never be able to detect the data inside it [9]. Not only that it helps by reducing risks of identification of the secret data while transmitting.…”

Section: Fig-11: Decryption Of Existing Systemmentioning

confidence: 99%

Colour Visual Cryptography (3,3) Scheme

Manisha¹

2021

TURCOMAT

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Visual Cryptography is an encryption technique which performs only encryption in cryptography, and it is used to encrypt every visual data. And this cryptography is different and unique in all cryptographic techniques, because of not performing decryption process mechanically, and that is done mechanically. In normal visual cryptography only black and white images are encrypted. In this paper we propose a different type of visual cryptography scheme for colour imagesin CMY format. And it protects the secret of the original image and no other techniques does not decrypt it except our decryption technique.

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Section: Fig-11: Decryption Of Existing Systemmentioning

confidence: 99%

Colour Visual Cryptography (3,3) Scheme

Manisha¹

2021

TURCOMAT

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“…This indirect imaging modality offers an alternative optical encryption approach, where a calculation is required and the series of patterns and bucket intensities act as the key and ciphertext, respectively ( 37 ). On the basis of the computational principle of SPI, different encryption schemes have been developed to enhance the number of encrypted images and the security, such as multipositioned image encryption ( 38 ), multicolored image encryption ( 39 ), and visual cryptography encryption ( 40 ). Nevertheless, the large numbers of patterns (i.e., the keys of encryption and decryption) would necessarily increase the burden of the data transmission process and easily attract the attention of eavesdroppers, which is the intrinsic shortcoming of SPI in the application of optical encryption.…”

Section: Introductionmentioning

confidence: 99%

Metasurface-based key for computational imaging encryption

et al. 2021

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Optical metasurfaces can offer high-quality multichannel displays by modulating different degrees of freedom of light, demonstrating great potential in the next generation of optical encryption and anti-counterfeiting. Different from the direct imaging modality of metasurfaces, single-pixel imaging (SPI) as a typical computational imaging technique obtains the object image from a decryption-like computational process. Here, we propose an optical encryption scheme by introducing metasurface-images (meta-images) into the encoding and decoding processes as the keys of SPI encryption. Different high-quality meta-images generated by a dual-channel Malus metasurface play the role of keys to encode multiple target images and retrieve them following the principle of SPI. Our work eliminates the conventional digital transmission process of keys in SPI encryption, enables the reusability of a single metasurface in different encryption processes, and thereby paves the way toward a high-security optical encryption between direct and indirect imaging methods.

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“…Cai et al have proposed a cryptosystem based on equal-mode decomposition (EMD) [27], which decomposed a 2D vector into two 2D vectors, one of which is ciphertext and the other is a private key as a security constraint. This technique provided a reliable one-way function of trapdoor [28], and was widely used in image encryption, such as Fresnel-based cryptosystem [29], cascaded EMD cryptosystem [30], etc. However, the output of the conventional EMD is complex and only applicable to grayscale images.…”

Section: Introductionmentioning

confidence: 99%

A Novel 3D Vector Decomposition for Color-Image Encryption

Zhu

Wang

et al. 2020

IEEE Photonics J.

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In this paper, a novel 3D vector decomposition is proposed for color-image encryption, in which a 3D vector is decomposed into two 3D vectors with random size in a random plane for providing a reliable security constraint. The technique of 3D vector decomposition, as far as we know, firstly offers a three-component encryption with one action, which fits well color-image encryption, and outputs a real ciphertext, which is convenient for recording and transmission. Furthermore, we employ an 1D chaos, which has strong chaotic properties, and reality-preserving fractional Hartley transform to cooperate 3D vector decomposition for constructing a color-image cryptosystem. Therefore, the proposed cryptosystem accomplishes improved security by reducing the single-channel attack risk in individual color-image encryption and avoiding the vulnerable channel in sequential color-image encryption as well as reduced the amount of data of transform-based cryptosystem by avoiding the complex output. Also, it has the advantages of strong chaotic performances, large key space and high key sensitivity, which is highly robust against various attacks. Experimental results show the effectiveness and superiority of the proposed cryptosystem.

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Visual cryptography in single-pixel imaging

Cited by 117 publications

References 40 publications

Colour Visual Cryptography (3,3) Scheme

Colour Visual Cryptography (3,3) Scheme

Metasurface-based key for computational imaging encryption

A Novel 3D Vector Decomposition for Color-Image Encryption

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