计算机工程与应用 ›› 2010, Vol. 46 ›› Issue (19): 157-159.DOI: 10.3778/j.issn.1002-8331.2010.19.046

• 图形、图像、模式识别 • 上一篇    下一篇

一种小波变换域图像加密技术

刘钺   

  1. 郑州大学信息工程学院,郑州450001
  • 收稿日期:2008-12-15 修回日期:2009-03-03 出版日期:2010-07-01 发布日期:2010-07-01
  • 通讯作者: 刘钺

Image encryption technology based on DWT

LIU Yue   

  1. College of Information Engineering,Zhengzhou University,Zhengzhou 450001,China
  • Received:2008-12-15 Revised:2009-03-03 Online:2010-07-01 Published:2010-07-01
  • Contact: LIU Yue

摘要: 在总结了图像的加密方法基础上,结合Lorenz 混沌映射,在离散小波变换域,对24 位位图进行了加密,并详细比较了不同尺度下的小波系数置乱对加密效果的影响,系统分析了实验结果,指出使用小波系数进行图像加密存在的问题,为工程应用中的图像加密提供了一种选择。

Abstract: This article sums up the image of the encryption algorithm and produce.24-Bitmap image encryption is implemented
in DWT domain,the data sequences used for encryption are created from Lorenz chaotic system.The article performs a
detailed comparison of the effect scrambling DWT coefficients at different scales for encryption,as well as the systematic analysis of the experimental result,finally points out a question using of wavelet coefficients for encryption,and also provides another method for the image encryption.

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