A Lossless Tagged Visual Cryptography Scheme | IEEE | IEEE projects 2014

As one of the most efficient multi-secret visual cryptography (MVC) schemes, the tagged visual cryptography (TVC) is capable of hiding tag images into randomly selected shares. However, the encoding processes of TVC and other MVC schemes bring distortion to shares, which definitely lowers the visual quality of the decoded secret image. This letter proposes an extended TVC scheme, named as lossless TVC (LTVC). Specifically, “lossless” means that the proposed LTVC scheme encodes the tag image without affecting the rebuilt secret image, i.e., the decoded secret image of LTVC has the same visual quality with that of the conventional VC scheme . Moreover, we propose the probabilistic LTVC (P-LTVC) to solve the potential security problem of LTVC. Finally, the superiority of the proposed scheme is experimentally verified. Published in: Signal Processing Letters, IEEE (Volume:21 , Issue: 7 ) Date of Publication: July 2014 Page(s): 853 - 856 ISSN : 1070-9908 INSPEC Accession Number: 14264325 DOI: 10.1109/LSP.2014.2317706 Date of Publication : 16 April 2014 Date of Current Version : 28 April 2014 Issue Date : July 2014 Sponsored by : IEEE Signal Processing Society Publisher: IEEE Mob: 9985613074, 7396708351 Site: www.newieeeprojects.com Email: newieeeprojects@gmail.com