基于级联混沌映射与低位嵌入的图像隐写算法

穆俊

doi:10.3788/YJYXS20203504.0374

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基于级联混沌映射与低位嵌入的图像隐写算法

图像处理 | 更新时间：2020-07-05

- 基于级联混沌映射与低位嵌入的图像隐写算法
- Image steganography algorithm based on cascaded chaotic map and low bits embedding
- 液晶与显示 2020年35卷第4期页码：374-382
- 作者机构：
  
  滇西科技师范学院信息工程学院, 云南临沧 677000
- 作者简介：
  
  [ "穆俊(1979-), 男, 云南临沧人, 硕士, 副教授, 2008年于云南大学获得硕士学位, 主要从事计算机应用、计算机软件与理论、数据挖掘方面的研究。E-mail:Mujunmj0827@126.com" ]
- 基金信息：
  
  云南省教育厅科学研究基金重点项目（No.2014Z137）
- DOI：10.3788/YJYXS20203504.0374
  中图分类号： TP391.4;TH691.9
- 收稿日期：2019-08-30，
  
  修回日期：2019-11-22，
  
  录用日期：2019-11-22，
  
  纸质出版日期：2020-04-05
- 稿件说明：
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穆俊. 基于级联混沌映射与低位嵌入的图像隐写算法[J]. 液晶与显示, 2020,35(4):374-382.

Jun MU. Image steganography algorithm based on cascaded chaotic map and low bits embedding[J]. Chinese journal of liquid crystals and displays, 2020, 35(4): 374-382.
穆俊. 基于级联混沌映射与低位嵌入的图像隐写算法[J]. 液晶与显示, 2020,35(4):374-382. DOI： 10.3788/YJYXS20203504.0374.

Jun MU. Image steganography algorithm based on cascaded chaotic map and low bits embedding[J]. Chinese journal of liquid crystals and displays, 2020, 35(4): 374-382. DOI： 10.3788/YJYXS20203504.0374.

摘要

为保证部分具有重要价值的数字图像在不可信信道中传输的安全性，本文设计了一种基于级联混沌映射和伪装图低位嵌入的图像隐写算法。该算法为置乱-混淆-低位嵌入结构。在置乱步骤中，首先通过两个混沌映射的级联设计了一种新型的混沌映射并用其产生具有高度随机性的随机数序列，然后随机数序列被用于数字图像的置乱，生成置乱图。在混淆步骤中，通过用户随机选择的伪装图与置乱图的与或操作来实现置乱图中像素值的混淆。最后，在低位嵌入步骤中，混淆步骤生成的图像按照两个位平面一组的规则被拆分成4份子图像并嵌入到伪装图的最低两位。在多个混沌映射性能指标的测试中，本文所提出的级联混沌映射均表现优异。在图像安全性和性能分析实验中，本文所提出的图像隐写算法表现出高度的安全性和极高的执行效率。

Abstract

In order to ensure the security of some digital images with important value in untrusted channels

an image steganography algorithm based on cascaded chaotic map and low-bits embedding is proposed. The algorithm has a permutation-confusion-low bits embedding structure. In the permutation step

a novel chaotic map is firstly designed by cascade of two chaotic maps and used to generate a highly random sequence of random numbers

and then the random number sequence is used for scrambling digital images. In the confusion step

the confusion of the pixel values in the scrambling image is achieved by the XOR operation of the randomly selected cover image and the scrambling image. Finally

in the low bits embedding step

the image generated by the confusion step is split into four sub-images and embedded in the lowest two bits of the cover image. In the test of several chaotic map performance indicators

the cascaded chaotic map proposed in this paper is excellent. In the image security and performance analysis experiments

the image steganography algorithm proposed in this paper also shows high security and high execution efficiency.

关键词

Keywords

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