首页 | 本学科首页   官方微博 | 高级检索  
     

彩色数字图像的脆弱数字水印
引用本文:陈丁剑,黄用华,廖启征,魏世民,郭磊. 彩色数字图像的脆弱数字水印[J]. 测控技术, 2012, 31(12): 45-48
作者姓名:陈丁剑  黄用华  廖启征  魏世民  郭磊
作者单位:上海理工大学光电信息与计算机工程学院,上海,200093
基金项目:上海市教育委员会重点学科建设资助项目
摘    要:针对彩色数字图像局部区域内容保护和认证,研究了彩色数字图像的脆弱数字水印.为了保证水印的安全性,利用三维二值混沌序列对原始二值水印图像进行加密,对提取的加密二值水印图像进行解密.嵌入载体图像的水印和从嵌入水印的图像中提取的水印均是加密水印.将彩色数字图像中被保护区域的三个分量的小波变换域分别嵌入加密水印,以保护其内容的完整性和不可篡改性.采用模运算实现水印的嵌入和盲提取.理论分析和实验结果表明,该脆弱水印算法对彩色数字图像保护区域内的任何篡改,都能够正确地检测和定位.

关 键 词:脆弱水印  图像认证  彩色数字图像  混沌加密  小波变换

Digital Fragile Watermark of Color Digital Image
ZHANG Ding-hui , ZHANG Ya-qi. Digital Fragile Watermark of Color Digital Image[J]. Measurement & Control Technology, 2012, 31(12): 45-48
Authors:ZHANG Ding-hui    ZHANG Ya-qi
Abstract:In light of the content protection and authentication of local areas in color digital images,a fragile watermarking algorithm of color digital image is studied.To ensure the security of digital watermark,using a three dimensional binary chaotic sequence,the original binary watermark image is encrypted,and the encrypted binary watermark images extracted from the watermarked image is decrypted.The watermarks embedded into the cover image and the ones extracted from the watermarked image are all encrypted watermarks.The encrypted watermarks are respectively embedded into the wavelet transform domains of the three components of the protected area in color digital image to protect the integrality and non tampering of its content.The embedding and blind extracting of digital watermarks are implemented by using modular arithmetic.The results of theoretic analyses and experiments have shown that the digital fragile watermarking can detect and locate any tampering of the protected areas in color digital images.
Keywords:fragile watermark  image authentication  color digital image  chaotic encryption  wavelet transform
本文献已被 万方数据 等数据库收录!
点击此处可从《测控技术》浏览原始摘要信息
点击此处可从《测控技术》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号