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应用科学学报 ›› 2008, Vol. 26 ›› Issue (1): 34-34 .

• 论文 • 上一篇    下一篇

基于RS码的图像半脆弱水印

刘翠卿1+, 平西建1, 张涛1 王云鹤2   

  1. 1．信息工程大学 信息工程学院, 河南 郑州 450002；

    2. 中国人民公安大学, 北京 100038

  • 收稿日期:2007-09-11 修回日期:2007-10-22 出版日期:2008-01-31 发布日期:2008-01-31

Semi-fragile Image Watermarking Based on RS Codes

LIU Cui-Qing1, PING Xi-Jian1, ZHANG Tao1， WANG Yun-He2   

  1. 1.Institute of Information Engineering , Information Engineering University, Zhengzhou 450002, China
    2.Chinese People’s Public Security University, Beijing 100038, China
  • Received:2007-09-11 Revised:2007-10-22 Online:2008-01-31 Published:2008-01-31

被引次数

6

摘要： 利用RS码的编码冗余和图像特定域的数据特性实现了基于RS码的图像半脆弱水印。将图像小波域多层次分解与RS码信息隐藏技术相结合，用小波分解所得到的图像鲁棒性数据与认证密钥一起作RS纠错码的编码数据，将编码产生的可携带版权信息的校验数据嵌入图像的不同小波区域，实现图像半脆弱水印功能。分析显示，基于RS码的认证密钥图像半脆弱水印具有很好的完整性认证和鲁棒性认证功能。

关键词: 半脆弱水印, RS码, 错误图样, 认证密钥

Abstract: The proposed semi-fragile watermarking scheme is realized using the RS error-correcting codes and wavelet decomposition. While the encoding data of RS codes are composed of an authentication key and selected wavelet data of an image, the checked data of RS codes carry the digital watermark and are embedded into different sub-bands in the wavelet domain of the host image, achieving semi-fragility. Theoretical analysis indicates that the proposed scheme is capable of identifying the authenticators with the authentication key data.

Key words: semi-fragile watermark, RS code, error map, authentication key