彩色图像的可视分存方案

Color Visual Cryptography Scheme

摘要: 利用矩阵并的思想给出了一般存取结构下分存图有意义的可视分存方案(称作扩展可视分存方案),得到像素膨胀值,并且构造了一般存取结构的彩色图像扩展可视分存方案,得到彩色(k,n)扩展方案的最优像素膨胀.

Abstract: This paper presents a visual cryptography scheme with meaningful shares for general access structure,called extended visual cryptography scheme(EVCS),by means of matrices concatenation,and the pixel expansion is obtained.A color extended visual cryptography scheme for general access structure is constructed,and the optimal pixel expansion for color (k,n)-EVCS is obtained as well.