Results 11 to 20 of about 1,969 (259)
Privacy Protection of Digital Images Using Watermarking and QR Code-based Visual Cryptography
Advances in Multimedia, 2023 The increase in information sharing in terms of digital images imposes threats to privacy and personal identity. Digital images can be stolen while in transfer and any kind of alteration can be done very easily. Thus, privacy protection of digital images
Akanksha Arora +2 more
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Visual Cryptography Scheme with Essential Participants
Mathematics, 2020 Visual cryptography scheme (VCS) shares a binary secret image into multiple shadows printed on transparencies. Stacking shadows can visually decode the secret image without computational resources. Specifically, a (k, n) threshold VCS ((k, n)-VCS) shares
Peng Li, Liping Yin, Jianfeng Ma
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Hyperchaotic technology-based efficient image encryption algorithm an overview. [PDF]
مجلة جامعة الانبار للعلوم الصرفة, 2023 Multimedia data encryption is so crucial because the multimedia encryption algorithm needs more time and memory, and it is difficult to implement. Because of this, the hyperchaotic image encryption technique is becoming more and more popular, which uses ...
Kawthar Khalaf, Ali Sagheer
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Personalized Shares in Visual Cryptography
Journal of Imaging, 2018 This article deals with visual cryptography. It consists of hiding a message in two key images (also called shares). The decryption of the message is obtained through human vision by superposition of the shares.
Karim Hammoudi, Mahmoud Melkemi
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Boolean Operation Based Visual Cryptography
IEEE Access, 2019 A ( $k$ , $n$ )-Traditional Visual Cryptographic Scheme (VCS) based on basis matrices encoded a secret image into $n$ shadow images distributed among $n$ participants.
Zhili Zhou +3 more
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An Enhanced Approach of Image Steganographic Using Discrete Shearlet Transform and Secret Sharing
مجلة بغداد للعلوم, 2022 Recently, the internet has made the users able to transmit the digital media in the easiest manner. In spite of this facility of the internet, this may lead to several threats that are concerned with confidentiality of transferred media contents such as ...
Yasir Ahmed Hamza +2 more
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IET Information Security, 2021 Researchers have put forward many variations of schemes for secret image sharing on grounds of visual cryptography and polynomials. The authors of this paper put forward a novel scheme for sharing multiple secret images with perfect reconstruction and ...
Krishnaraj Bhat +3 more
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Threshold Visual Cryptography Schemes With Tagged Shares
IEEE Access, 2020 The appearance of shares encoded by traditional visual cryptography is not easy to distinguish and meaningless. It means the shares cannot be managed efficiently nor user-friendly. A tagged visual cryptography scheme (TVCS) provides additional tag images
Pei-Ling Chiu, Kai-Hui Lee
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A Secret Image Sharing Based on Logistic-Chebyshev Chaotic Map and Chinese Remainder Theorem [PDF]
Computer Science Journal of Moldova, 2023 Visual secret sharing (VSS) was introduced in order to solve information security issues. It is a modern cryptographic technique. It involves breaking up a secret image into $n$ secured components known as shares.
Asmaa Hilmi +2 more
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Bounds for visual cryptography schemes
Discrete Applied Mathematics, 2010 In this paper, we investigate the best pixel expansion of the various models of visual cryptography schemes. In this regard, we consider visual cryptography schemes introduced by Tzeng and Hu [13]. In such a model, only minimal qualified sets can recover the secret image and that the recovered secret image can be darker or lighter than the background ...
Hossein Hajiabolhassan, Abbas Cheraghi
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