Image encryption by random grids

被引：201

作者：

Shyu, Shyong Han ^{[1
]}

机构：

[1] Ming Chuan Univ, Dept Comp Sci & Informat Engn, Tao Yuan 333, Taiwan

来源：

PATTERN RECOGNITION | 2007年 / 40卷 / 03期

关键词：

image encryption; random grid; visual cryptography; halftone; color mixing; color decomposition;

D O I：

10.1016/j.patcog.2006.02.025

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

A random grid in this paper is a transparency comprising a two-dimensional array of pixels that are either transparent or opaque determined in a totally random way. We design algorithms by using random grids to accomplish the encryption of the secret gray-level and color images in such a way that neither of the two encrypted shares alone leaks the information of the secret image, whereas the secret can be seen when these two shares are superimposed. The decryption process is done by our visual system and no computation is required. As compared to the approaches in visual cryptography, our algorithms do not need the basis matrices to encode the shares so that the problem of pixel expansion exists no more; that is, the sizes of the secret image and the encrypted shares are the same. (c) 2006 Pattern Recognition Society. Published by Elsevier Ltd. All rights reserved.

引用

页码：1014 / 1031

页数：18

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