Multi secret image color visual cryptography schemes for general access structures

作     者：YI Feng, WANG Daoshun , LUO Ping, HUANG Liansheng and DAI Yiqi Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China 

作者机构：Department of Computer Science and Technology Tsinghua University Beijing 100084 China 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2006年第16卷第4期

页      面：431-436页

核心收录：

学科分类：08[工学] 080203[工学-机械设计及理论] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0702[理学-物理学] 

基　　金：Supported by National Natural Science Foundation of China (Grant No. 90304014) the Major State Basic Research Development Program of China (Grant No.2003CB314805) 

主　　题：visual cryptography secret sharing scheme general access structure. 

摘      要：In the proposed visual cryptography schemes for general access structures, the single secret image black-and-white visual cryptography schemes with meaningful shares have been constructed, in which the shares are innocent looking images. The meaningful shares have not been realized in single secret image color schemes; neither have the multi secret images color schemes. In this paper, the multi secret images color visual cryptography schemes for general access structures with meaningful shares are constructed by the method of matrix concatenation, the pixel expansion is obtained, and the validity of the scheme is proven. In our scheme, the different combination of meaningful color shares can be used to recover distinct color secret images. The multi secret images black-and-white visual cryptography scheme is a special case of our color scheme.