101 search results - page 1 / 21 » Extended visual cryptography schemes |
IANDC
2007
13 years 11 months ago
2007
Visual cryptography schemes have been introduced in 1994 by Naor and Shamir. Their idea was to encode a secret image into n shadow images and to give exactly one such shadow image ...
ICIP
2003
IEEE
15 years 23 days ago
2003
IEEE
This paper considers the problem of encoding a secret binary image SI into n shares of meaningful halftone images within the scheme of visual cryptography (VC). Secret pixels enco...
ICASSP
2009
IEEE
14 years 5 months ago
2009
IEEE
This paper introduces a color visual cryptography encryption method that produces meaningful color shares via visual information pixel (VIP) synchronization and error diffusion ha...
ICASSP
2008
IEEE
14 years 5 months ago
2008
IEEE
This paper introduces a novel, cost effective visual cryptography scheme suitable for color image transmission over bandwidth constraint channels. Unlike previously proposed schem...
DCC
2005
IEEE
14 years 10 months ago
2005
IEEE
A recent publication introduced a Visual Crypto (VC) system, based on the polarisation of light. This VC system has good resolution, contrast and colour properties. Mathematically,...