25-06-2012, 12:22 AM
report of halftone image visual cryptography
25-06-2012, 12:22 AM
report of halftone image visual cryptography
25-06-2012, 10:48 AM
to get information about the topic "halftone image visual cryptography" full report ppt and related topic refer the link bellow
https://seminarproject.net/Thread-color-...-diffusion https://seminarproject.net/Thread-visual...phy--26143
23-08-2012, 09:17 PM
hi i need halftone visual cryptography ful project report
24-08-2012, 06:13 PM
Abstract—
Visual cryptography encodes a secret binary image(SI) intoshares of random binary patterns. If the shares arexeroxed onto transparencies, the secret image can be visuallydecoded by superimposing a qualified subset of transparencies,but no secret information can be obtained from the superpositionof a forbidden subset. The binary patterns of theshares, how-ever, have no visual meaning and hinder the objectives of visualcryptography. Extended visual cryptography [1] was proposedrecently to construct meaningful binary images as shares usinghypergraph colourings, but the visual quality is poor. In thispaper, a novel technique named halftone visual cryptography isproposed to achieve visual cryptography via halftoning. Based onthe blue-noise dithering principles, the proposed method utilizesthe void and cluster algorithm [2] to encode a secret binaryimage intohalftone shares (images) carrying significant visualinformation. The simulation shows that the visual quality of theobtained halftone shares are observably better than that attainedby any available visual cryptography method known to date full report available on http://csis.bits-pilani.ac.in/faculty/mu...ishna2.pdf
07-02-2013, 12:36 PM
to get information about the topic "halftone visual cryptography"full report ppt and related topic refer the link bellow
http://seminarprojectsshowthread.php?tid=43989&google_seo=ytck++&pid=107019#pid107019 https://seminarproject.net/Thread-visual...graphy-ppt https://seminarproject.net/Thread-visual-cryptography |
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