| Connectivity-Based Watermarking Robust to Geometrical Attacks |
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| 作者姓名： | 王宏霞 罗键 |
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| 作者单位： | [1]Information Security and National Computing Grid Lab, Southwest Jiaotong University, Chengdu 610031, China [2]School of Business Administration, Southwest University of Finance and Economy of China, Chengdu 610074, China |
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| 摘 要： | Introduction Thegoalofdigitalwatermarkingtechniqueisto embedsomeunnoticeableinformation(calleda mark)inthecontentofmediainordertoprotect copyrightorauthenticateintegralityandverity.Many robustwatermarkingtechniqueshavesuccessfullyre sistednotonlycommonsig…
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| 关 键 词： | 连通性 水位标记 几何学 交通工程 |
| 文章编号： | 1005-2429（2006）01-0001-06 |
| 收稿时间： | 2005-07-07 |
Connectivity-Based Watermarking Robust to Geometrical Attacks |
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| Wang Hongxia,Luo Jian.Connectivity-Based Watermarking Robust to Geometrical Attacks[J].Journal of Southwest Jiaotong University,2006,14(1):1-6. |
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| Authors: | Wang Hongxia Luo Jian |
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| Abstract: | A novel robust watermarking scheme based on image connectivity is proposed. In the scheme, the connected objects are obtained according to selected connectivity pattern, and the gravity centers are calculated in several bigger objects as the reference points for watermark embedding. Based on these reference points and the center of the whole image, several sectors are formed, and the same version of watermarks is embedded into these sectors and their opposites. Thanks to the very stable gravity center of the connected objects, watermark detection is synchronized successfully. Simulation results show that the watermark can survive under both local and global geometrical distortions. |
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| Keywords: | Connectivity Digital watermarking Robustness Geometrical distortion |
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