VCPSS: A two-in-one two-decoding-options image sharing method combining visual cryptography (VC) and polynomial-style sharing (PSS) approaches |
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Authors: | Sian-Jheng Ja-Chen |
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Affiliation: | aDepartment of Computer Science, National Chiao Tung University, Hsinchu, Taiwan, ROC |
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Abstract: | This paper presents a novel method to combine two major branches of image sharing: VC and PSS. n transparencies are created for a given gray-valued secret image. If the decoding computer is temporarily not available at (or, not connected to) the decoding scene, we can still physically stack any t received transparencies (t n is a threshold value) to get a vague black-and-white view of the secret image immediately. On the other hand, when the decoding computer is finally available, then we can get a much finer gray-valued view of the secret image using the information hidden in the transparencies. In summary, each transparency is a two-in-one carrier of the information, and the decoding has two options. |
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Keywords: | Hiding using block-types Image sharing mml76" > text-decoration:none color:black" href=" /science?_ob=MathURL&_method=retrieve&_udi=B6V14-4NK4G29-1&_mathId=mml76&_user=10&_cdi=5664&_rdoc=27&_acct=C000054348&_version=1&_userid=3837164&md5=c929ebaffae0a4c1d8742523d3692ad8" title=" Click to view the MathML source" alt=" Click to view the MathML source" >(t,n) threshold scheme Halftone version Compression |
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