Title :
On visual cryptography schemes
Author :
De Santis, Alfredo
Author_Institution :
Dipt. di Inf. ed Applicazioni, Salerno Univ., Italy
Abstract :
We consider visual cryptography schemes in which two pixels combine in an arbitrary way. We analyze the pixel expansion and the contrast of (2,n)-threshold visual cryptography schemes, that is schemes in which any pair of n shares can visually reconstruct the secret image, but any single share has no information on the secret image
Keywords :
cryptography; image coding; image reconstruction; contrast; image reconstruction; pixel expansion; secret image; visual cryptography schemes; Boolean functions; Cryptography; Image analysis; Image reconstruction; Information analysis; Pixel; Polarization; Reconstruction algorithms; Stacking; Visual system;
Conference_Titel :
Information Theory Workshop, 1998
Conference_Location :
Killarney
Print_ISBN :
0-7803-4408-1
DOI :
10.1109/ITW.1998.706491
