基于像素不扩展视觉密码的水印算法

›› 2017, Vol. 2 ›› Issue (6): 19-21.

基于像素不扩展视觉密码的水印算法

红河学院工学院，云南蒙自661199

收稿日期:2016-10-28 出版日期:2017-06-15 发布日期:2017-06-15
作者简介:李春艳，讲师，主要从事数字水印、物联网安全研究.

A Digital Watermarking Algorithm based on Image Size Invariant Visual Cryptography

Engineering Institute, Honghe University, Mengzi, Yunnan 661199，China

Received:2016-10-28 Online:2017-06-15 Published:2017-06-15

摘要/Abstract

摘要： 为了提高水印容量和鲁棒性，提出了基于像素不扩展视觉密码方案的盲水印算法。首先对二值水印图像进行置乱，去除图像的像素相关性。然后，利用像素不扩展的（2，2）视觉密码的基本矩阵修改载体图像的低位以嵌入水印信息。实验结果明算法对多种图像处理具有良好的鲁棒性，且实现简单，水印容量大，是一种简单可靠的水印算法。

关键词: 像素不扩展, 视觉密码, 基本矩阵, 最不重要位

Abstract: In order to increase the capacity and robustness of watermarking, this paper presents a digital watermarking algorithm based on image size invariant visual cryptography. Firstly, the watermark of binary image is scrambled in order to reduce the pixel correlation. Then the low bit of carrier image is altered by using basic matrix of（2, 2）visual cryptography scheme and watermark value. Experimental results show the algorithm has better robustness performance under image processing attack. The method is accomplished easily and the embedded data is larger. It is a simple and reliable watermarking algorithm.

Key words: image size invariant, visual cryptography, basic matrix, least significant bit

中图分类号:

TP301.6

李春艳. 基于像素不扩展视觉密码的水印算法[J]. , 2017, 2(6): 19-21.

Li Chunyan. A Digital Watermarking Algorithm based on Image Size Invariant Visual Cryptography[J]. , 2017, 2(6): 19-21.