| Difference Energy Based Blind Image Watermarking Resisting to Geometrical Distortions |
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| 引用本文： | YU Yanwei LU Zhengding LING Hefei. Difference Energy Based Blind Image Watermarking Resisting to Geometrical Distortions[J]. 武汉大学学报:自然科学英文版, 2006, 11(6): 1882-1886. DOI: 10.1007/BF02831898 |
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| 作者姓名： | YU Yanwei LU Zhengding LING Hefei |
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| 作者单位： | College of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China |
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| 基金项目： | 国家自然科学基金;湖北省自然科学基金 |
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| 摘 要： | In this paper a blind image watermarking that can resist to rotation, scaling and translation （RST） attacks is proposed. Based on the spread spectrum, the watermark is modulated before embedding. The logpolar mapped discrete fourier transform （LPM-DFT） magnitude of a disk, a part of the origin image, constitutes the RST-invariant domain, where the origin of the LPM is the center of the disk and the sampling rates of the LPM are constant. After the middle frequency band of LPM-DFT magnitude, namely the watermark-embedding domain, is grouped according to the watermark length, the watermark is embedded by adjusting the difference between the two sub-region energy in each group. To improve the imperceptibility, the watermark-embedding domain is shuffled before embedding and the watermark is not embedded directly into the watermark-embedding domain. In watermark detection procedure, neither the original image nor any knowledge about the distortions is required. Experimental results show that the proposed scheme is very robust against RST distortion and common image processing attacks.
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| 关 键 词： | 图象水印 信息安全 不变性 几何失真 |
| 文章编号： | 1007-1202（2006）06-1882-05 |
| 收稿时间： | 2006-05-20 |
Difference energy based blind image watermarking resisting to geometrical distortions |
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| Yu Yanwei,Lu Zhengding,Ling Hefei. Difference energy based blind image watermarking resisting to geometrical distortions[J]. Wuhan University Journal of Natural Sciences, 2006, 11(6): 1882-1886. DOI: 10.1007/BF02831898 |
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| Authors: | Yu Yanwei Lu Zhengding Ling Hefei |
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| Affiliation: | (1) College of Computer Science and Technology, Huazhong University of Science and Technology, 430074 Wuhan, Hubei, China |
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| Abstract: | In this paper a blind image watermarking that can resist to rotation, scaling and translation (RST) attacks is proposed. Based on the spread spectrum, the watermark is modulated before embedding. The log-polar mapped discrete fourier transform (LPM-DFT) magnitude of a disk, a part of the origin image, constitutes the RST-invariant domain, where the origin of the LPM is the center of the disk and the sampling rates of the LPM are constant. After the middle frequency band of LPM-DFT magnitude, namely the watermark-embedding domain, is grouped according to the watermark length, the watermark is embedded by adjusting the difference between the two sub-region energy in each group. To improve the imperceptibility, the watermark-embedding domain is shuffled before embedding and the watermark is not embedded directly into the watermark-embedding domain. In watermark detection procedure, neither the original image nor any knowledge about the distortions is required. Experimental results show that the proposed scheme is very robust against RST distortion and common image processing attacks. |
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| Keywords: | image watermarking geometrical attacks invariance robustness |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
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