A Visual Cryptography based system for sharing multiple secret images
نویسنده
چکیده
A Visual Cryptography (VC)-based system for sharing multiple secret images is proposed. Several weighted transparencies are generated so that people can reveal multiple secret images by stacking qualified subsets of some transparencies together. The transparency with relatively larger weight decides which secret image will be revealed. The proposed method has the following characteristics: decoding without computation, multiple secret images recovery, max-weight dominance, and quality-control design. Key-Words: visual cryptography, image sharing, secret sharing, multi-secret sharing.
منابع مشابه
Multi-Threshold Visual Secret Sharing
Visual cryptography (VC) has been developed extensively based on its practicability. These schemes can encode a black-and-white secret image into several shadow images, and, by stacking a certain number of shadow images, can retrieve the secret image through the human visual system. In this paper, we employ Hsu et al.’s ideal multi-threshold secret sharing scheme based on monotone span programs...
متن کاملRefinement of visual secret sharing scheme without image size expansion
1 [email protected] 2 [email protected] Abstract: The basic idea of the Visual Cryptography is to encrypt a secret image into n number of meaningless share images. The Visual Cryptography technique cannot leak the encrypted information of the shared secret by virtue of any combination of the n share images combined together. The share images are printed on transparencies and distribut...
متن کاملVisual Secret Sharing Schemes for Multiple Secret Images Allowing the Rotation of Shares
In this paper, a method is proposed to construct a visual secret sharing (VSS) scheme for multiple secret images in which each share can be rotated with 180 degrees in decryption. The proposed VSS scheme can encrypt more number of secret images compared with the normal VSS schemes. Furthermore, the proposed technique can be applied to the VSS scheme that allows to turn over some shares in decry...
متن کاملMultiple Image Encryption using Random Circular Grids and Recursive Image Hiding
The visual secret sharing (VSS) scheme encrypts the secret information into various meaningless shares. These shares are distributed to the authorized participants and the secret information can be retrieved by any k out of n participants by stacking their respective shares on top of each other. This scheme uses HVS (Human Visual System) to decrypt the information, and thus no technical or fina...
متن کاملMultiple Secret Sharing Scheme with Gray-Level Mixing
Visual Secret Sharing (VSS) encrypts secret images into n shares and decryption is done through the human vision. But, traditional visual cryptography scheme is restricted to the number of secret images or the performance of recovered image is not good. The proposed scheme shares multiple images using gray level mixing with real size image recovery and has improved contrast of recovered images ...
متن کامل