A Chaotic Fragile Watermarking Technique with Precise Localization

DING Ke; HE Chen; WANG Hong-xia

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A Chaotic Fragile Watermarking Technique with Precise Localization

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- A Chaotic Fragile Watermarking Technique with Precise Localization
- Acta Electronica Sinica Vol. 32, Issue 6, Pages: 1009-1012(2004)
- 作者机构：
  
  上海交通大学电子工程系,上海,200030
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN919TP391
- Published Online：25 June 2004，
  
  Published：2004
- 稿件说明：
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DING Ke, HE Chen, WANG Hong-xia. A Chaotic Fragile Watermarking Technique with Precise Localization[J]. Acta Electronica Sinica, 2004, 32(6): 1009-1012.
DOI：

DING Ke, HE Chen, WANG Hong-xia. A Chaotic Fragile Watermarking Technique with Precise Localization[J]. Acta Electronica Sinica, 2004, 32(6): 1009-1012. DOI：

摘要

提出了一种特别适用于数字产品的认证、内容篡改证明和完整性证明的脆弱数字水印算法.原始图像的象素灰度值映射为混沌的初值

经过若干次迭代生成水印图像

然后把它嵌入象素灰度值的LSB(Least Significant Bit)平面.利用混沌对初值极端敏感性的特点

能够精确地定位对加入水印图像的篡改

并且水印提取不需要原始图像.实验结果表明了所提出水印方案对篡改证明的有效性

敏感性以及良好的篡改定位能力.

Abstract

A new fragile watermarking scheme is presented

which is capable of authentication

tamper-proofing and integrity verification of digital products.Let the grayscale values of host image map the initial values of the chaotic mapping.The watermark obtained by iterating several times of the chaotic mapping

is embedded into the LSB (Least Significant Bit) plane of host image.The proposed scheme can localize the tampers on the watermarked image by using to the high sensitivity on initial value of the chaotic mapping.Moreover

no host image is needed in watermark extraction.Our simulation results show the effectiveness

sensitivity and localization of tamper-proofing of this technique.

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