Results 201 to 210 of about 1,969 (259)
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Region Incrementing Visual Cryptography
IEEE Signal Processing Letters, 2009This letter presents a novel visual cryptography scheme, called region incrementing visual cryptography (RIVC), for sharing visual secrets with multiple secrecy levels in a single image. In the proposed n-level RIVC scheme, the content of an image S is designated to multiple regions associated with n secret levels, and encoded to n+1 shares with the ...
Ran-Zan Wang
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Image hatching for visual cryptography
ACM Transactions on Multimedia Computing, Communications and Applications, 2012Image hatching (or nonphotorealistic line-art) is a technique widely used in the printing or engraving of currency. Diverse styles of brush strokes have previously been adopted for different areas of an image to create aesthetically pleasing textures and shading.
Mohan Kankanhalli +2 more
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Cheating in Visual Cryptography
Designs, Codes and Cryptography, 2006zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gwoboa Horng +2 more
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Applications of visual cryptography
International Journal of Parallel, Emergent and Distributed Systems, 2011Visual cryptography is a secret sharing scheme with only few known applications. This paper first modifies visual cryptography techniques to make them suitable for applications and then proposes some applications that use the modified techniques. These applications are secured communication system that are used to broadcast one or more secrets, multi ...
Subba Rao V. Yengisetty, Bimal K. Roy
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Braille for Visual Cryptography
2014 IEEE International Symposium on Multimedia, 2014Visual Cryptography (VC) has been studied as a significant way of information security. In VC, original secret is divided into two images called shares. VC shares show no clue for secret perceptually, whereas participants are able to obtain the secret by simply superimposing the shares. Despite the obvious advantages of VC in crucial secret protection,
Guangyu Wang +2 more
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Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429), 2004
Visual cryptography encodes a secret binary image (SI) into n shares of random binary patterns. If the shares are xeroxed onto transparencies, the secret image can be visually decoded by superimposing a qualified subset of transparencies, but no secret information can be obtained from the superposition of a forbidden subset.
Zhi Zhou +2 more
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Visual cryptography encodes a secret binary image (SI) into n shares of random binary patterns. If the shares are xeroxed onto transparencies, the secret image can be visually decoded by superimposing a qualified subset of transparencies, but no secret information can be obtained from the superposition of a forbidden subset.
Zhi Zhou +2 more
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IEEE Signal Processing Letters, 2011
This letter presents a method for implementing visual cryptography (VC) in which an additional tag is attached to each generated share. The proposed (t, n), 2 ≤ t ≤ n tagged visual cryptography (TVC) scheme works like a traditional VC scheme does, where the original image is encoded in n shares in such a way that the secret can be revealed by ...
Ran-Zan Wang, Shuo-Fang Hsu
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This letter presents a method for implementing visual cryptography (VC) in which an additional tag is attached to each generated share. The proposed (t, n), 2 ≤ t ≤ n tagged visual cryptography (TVC) scheme works like a traditional VC scheme does, where the original image is encoded in n shares in such a way that the secret can be revealed by ...
Ran-Zan Wang, Shuo-Fang Hsu
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2008 International Conference on Advanced Computer Theory and Engineering, 2008
In this paper, we propose a Visual Cryptographic system which can be used to hide the original image information from an intruder or an unwanted user. The images can be in any standard format. The encrypted image is sent to the destination through the network and then the image is decrypted. We have used Symmetric-key cryptography.
null Ashutosh, Sayan Dev Sen
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In this paper, we propose a Visual Cryptographic system which can be used to hide the original image information from an intruder or an unwanted user. The images can be in any standard format. The encrypted image is sent to the destination through the network and then the image is decrypted. We have used Symmetric-key cryptography.
null Ashutosh, Sayan Dev Sen
openaire +2 more sources