.png){kind=icon}
Return
Fourier-based automatic alignment for improved visual cryptography schemes
.png){kind=icon}
OA
AI
DOI：10.1364/OE.19.022709.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
In Visual Cryptography, several images, called shadow images, that separately contain no information, are overlapped to reveal a shared secret message. We develop a method to digitally register one printed shadow image acquired by a camera with a purely digital shadow image, stored in memory. Using Fourier techniques derived from Fourier Optics concepts, the idea is to enhance and exploit the quasi periodicity of the shadow images, composed by a random distribution of black and white patterns on a periodic sampling grid. The advantage is to speed up the security control or the access time to the message, in particular in the cases of a small pixel size or of large numbers of pixels. Furthermore, the interest of visual cryptography can be increased by embedding the initial message in two shadow images that do not have identical mathematical supports, making manual registration impractical. Experimental results demonstrate the successful operation of the method, including the possibility to directly project the result onto the printed shadow image. (C) 2011 Optical Society of America
Keywords:
INFORMATION DISPLAY
Journal
IF:
3.3
Papers:
6.1W
Citations:
14.3W
Organization
Cited Papers
MTVSS: (M)isalignment (T)olerant (V)isual (S)ecret (S)haring on resolving alignment difficulty.png)
SIGNAL PROCESSING
SIGNAL PROCESSINGIF3.6
PREAI
ShareSaveShareSaveSecure information display with limited viewing zone by use of multi-color visual cryptographyOPTICS EXPRESSOAAI
OPTICS EXPRESSIF3.3
OAAIShareSaveTaxonomy, Distribution and Evolution of Trisopterine Gadidae by Means of Otoliths and Other CharacteristicsFishes
OAAI
FishesIF0
OAAIShareSaveShareSaveShareSaveShareSaveShareSave
View more