计算机应用 ›› 2012, Vol. 32 ›› Issue (11): 3129-3146.DOI: 10.3724/SP.J.1087.2012.03129

• 信息安全 • 上一篇    下一篇

基于数独的大容量可篡改定位动态多重水印算法

张力1,2,黎洪宋1,晏细兰1,廉德亮1   

  1. 1. 深圳大学 信息工程学院,广东 深圳 518060
    2. 深圳大学信息工程学院
  • 收稿日期:2012-05-31 修回日期:2012-07-20 发布日期:2012-11-12 出版日期:2012-11-01
  • 通讯作者: 张力
  • 作者简介:张力(1973-),女,山东莱西人,教授,博士,主要研究方向:数字水印、潜信道、信息安全;黎洪宋(1986-),男,湖南常宁人,硕士研究生,主要研究方向:数字水印、信息安全;晏细兰(1985-),女,江西南昌人,硕士研究生,主要研究方向:数字水印、信息安全。
  • 基金资助:
    深圳市互联网产业发展专项资金资助项目(C201005250085A)

Large-capacity dynamic multiple watermarking with tamperable localization based on Sudoku

ZHANG Li1,2,LI Hong-song2,YAN Xi-lan3,LIAN De-liang2   

  1. 1.
    2. Information Engineering College,Shenzhen University,Shenzhen Guangdong 518060,China
    3. .Information Engineering College,Shenzhen University,Shenzhen Guangdong 518060,China
  • Received:2012-05-31 Revised:2012-07-20 Online:2012-11-12 Published:2012-11-01
  • Contact: ZHANG Li

摘要: 提出一种基于数独的大容量动态水印算法,每像素的嵌入容量为2比特。先将原始图像分成大小为M×N像素不重叠区域,把大小为2M×N像素的若干个不同的水印嵌入到每个区域中。若加入水印后图像被篡改,则会造成篡改区域的水印不能正确提取。在任意时刻都可在感兴趣的区域中嵌入任意水印,即嵌入水印的位置和时间是按一定的协议动态确定的。实验结果表明该算法具有较大的水印嵌入容量和较高的篡改定位精确度。

关键词: 数独, 篡改定位, 多重水印

Abstract: In this paper the largecapacity dynamic multiple watermarking algorithm based on Sudoku was proposed with two bit/pixel embedding capacity. The original image was divided into M×N pixels nonoverlapping areas. Different watermarks with size of 2 M×N pixels were embedded into the corresponding areas. If the watermarked area was tampered, the watermark in this area could not be extracted correctly. At any time, any watermarks can be embedded into any area as long as the areas are nonoverlapping. The experimental results show that the proposed algorithm has a larger watermarking embedding capacity and higher accuracy of tampered localization.

Key words: Sudoku, tamper localization, multiple watermarking

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