Property Analysis of XOR-Based Visual Cryptography | IEEE | IEEE projects 2014

A (k,n) visual cryptographic scheme (VCS) encodes a secret image into n shadow images (printed on transparencies) distributed among n participants. When any k participants superimpose their transparencies on an overhead projector (OR operation), the secret image can be visually revealed by a human visual system without computation. However, the monotone property of OR operation degrades the visual quality of reconstructed image for OR-based VCS (OVCS). Accordingly, XOR-based VCS (XVCS), which uses XOR operation for decoding, was proposed to enhance the contrast. In this paper, we investigate the relation between OVCS and XVCS. Our main contribution is to theoretically prove that the basis matrices of (k,n)-OVCS can be used in (k,n)-XVCS. Meantime, the contrast is enhanced 2(k-1) times. Published in: Circuits and Systems for Video Technology, IEEE Transactions on (Volume:24 , Issue: 2 ) Date of Publication: Feb. 2014 Page(s): 189 - 197 ISSN : 1051-8215 INSPEC Accession Number: 14078274 DOI: 10.1109/TCSVT.2013.2276708 Date of Publication : 06 August 2013 Date of Current Version : 03 February 2014 Issue Date : Feb. 2014 Sponsored by : IEEE Circuits and Systems Society Publisher: IEEE Mob: 9985613074, 7396708351 Site: www.newieeeprojects.com Email: newieeeprojects@gmail.com