NDLI: A novel visual secret sharing scheme for multiple secrets via error diffusion in halftone visual cryptography

Content Provider	IEEE Xplore Digital Library
Author	Anbarasi, L.J. Vincent, M.J. Mala, G.S.A.
Copyright Year	2011
Description	Author affiliation: Department of Computer Science and Engineering, Jerusalem College of Engineering, Pallikkaranai, Chennai-600100 (Anbarasi, L.J.; Vincent, M.J.) \|\| Department of Computer Science and Engineering, St. Joseph's College of Engineering, Chennai-600119 (Mala, G.S.A.)
Abstract	Visual Cryptography is an encryption technique where a secret image is cryptographically encoded into n meaningless share images. In visual secret sharing scheme (k, n) the secret images can be visually revealed by stacking together any k or more transparencies of the shares and by inspecting less than k shares, one cannot retrieve the secret image. In Visual Secret Sharing based on halftoning, the continuous-tone image is first transformed into a halftone image, and then encrypted. The visual secret sharing scheme for multiple secrets is intended to encrypt more than one secret image into the same quantity of share images to increase the encryption capacity compared with the original VSS scheme. Two binary secret images are encrypted as in [10] without pixel expansion and the shares are embedded into the halftoned image to avoid the suspicion of the intruders. These halftone shares are concurrently error diffused to give visually pleasing effect. During decryption process, the halftone shares are directly stacked to reveal the first secret and the second secret could be revealed by stacking one share image and the other with a rotation angle of 180. The simulation result shows that when stacking the halftone shares, the first secret is revealed and when the second share is rotated to 180° and stacked to the first the second secret is retrieved which is of better quality.
Starting Page	129
Ending Page	133
File Size	249955
Page Count	5
File Format	PDF
ISBN	9781457705885
e-ISBN	9781457705908
DOI	10.1109/ICRTIT.2011.5972436
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-03
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Halftone visual cryptography Visualization Stacking Image Processing Gray-scale Quantization Filtering algorithms Error Diffusion Cryptography Visual Cryptography Pixel
Content Type	Text
Resource Type	Article

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