• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2014, Vol. 36 ›› Issue (10): 1985-1990.

• 论文 • 上一篇    下一篇

一种基于CRT与PCA的数字水印算法

罗晓峰,周建涛   

  1. (内蒙古大学计算机学院,内蒙古 呼和浩特 010021)
  • 收稿日期:2014-06-06 修回日期:2014-08-22 出版日期:2014-10-25 发布日期:2014-10-25
  • 基金资助:

    国家自然科学基金资助项目(61262082);内蒙古自治区自然科学基金杰出青年基金培养项目(2012JQ03);教育部科学技术研究重点项目(212025)

A digital watermarking algorithm based on CRT and PCA           

LUO Xiaofeng,ZHOU Jiantao   

  1. (College of Computer Science,Inner Mongolia University,Huhhot 010021,China)
  • Received:2014-06-06 Revised:2014-08-22 Online:2014-10-25 Published:2014-10-25

摘要:

数字水印是一种将特殊信息嵌入媒体数据中的技术,通常应用在数字图像、音频、视频以及其它媒体数据的版权保护和完整性验证方面,其中图像数字水印技术是研究的一个重点。提出了一种将中国剩余定理与主成分分析方法相结合的图像数字水印算法,并且在Matlab中实现了该算法。实验结果表明,相对于最低有效位算法,该算法有很好的不可感知性,对常见的攻击方式,如图像压缩、加噪、中值滤波和剪切等具有较强的鲁棒性。

关键词: 数字水印, 图像加密, 中国剩余定理, 主成分分析

Abstract:

Digital watermarking is a technique of embedding special information into media data.It is often used in the copyright protection and integrity verification of digital images,audio,video,and other media data. Image digital watermarking technology is one focus of the study. An image watermarking algorithm is proposed by combining Chinese Remainder Theorem (CRT) with Principal Components Analysis (PCA).The proposed algorithm is implemented in Matlab.The experiment results show that the algorithm is provably imperceptible comparing with LSB algorithm. In addition, it has strong robustness against some common attack methods,such as JPEG compression,adding noise,median filtering, and cropping.

Key words: digital watermarking;image encryption;chinese remainder theorem (CRT);principal components analysis (PCA)