基于线性同余的数字图像置乱与数字水印技术

为了实现数字图像的安全保密,提出了一种数字置乱加密技术和数字水印植入技术.探讨一类特殊的图像矩阵变换--Lebmer提出的线性同余模型,将线性同余模型扩展为数字图像的位置置乱加密算法,根据线性同余的规则提出了一种新颖的数字水印植入技术.实验结果表明,该算法可以在一定程度上满足数字图像加密和隐藏的鲁棒性要求.

Digital image scrambling and digital watermarking based on linear congruentia

In order to implement the digital image security and encryption,this article proposed a kind of digital image scrambling encryption and digital watermarking technology.The authors introduce a kind of special image matrix transform-linear congruentia,generalize it to the algorithm for digital image scrambling encryption in the position space.Based on the rules of linear congruentia,the authors present a novel digital watermarking technology.The experimental results show that the algorithm satisfies the robus...