101 search results - page 1 / 21 » Extended visual cryptography schemes |
IANDC
2007
13 years 4 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
14 years 6 months 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
13 years 11 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
13 years 11 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 4 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,...