| 基于阈值化分割与小波变换的彩色数字水印算法 |
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| 引用本文： | 付炜,黄志高,张瑞芳.基于阈值化分割与小波变换的彩色数字水印算法[J].电子测量技术,2006,29(6):129-131. |
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| 作者姓名： | 付炜 黄志高 张瑞芳 |
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| 作者单位： | 燕山大学信息科学与工程学院,秦皇岛,066004;燕山大学信息科学与工程学院,秦皇岛,066004;燕山大学信息科学与工程学院,秦皇岛,066004 |
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| 摘 要： | 文中提出1种根据灰度特征对水印图像进行阈值化分割,然后分别嵌入到原始图像小波变换后的低频及中频系数,并根据视觉系统的照度掩蔽等特性实现嵌入强度自适应调节的彩色数字水印新算法。由于通过阈值化分割把水印各像素按不同的幅度进行分类以适应低频系数和中频系数对鲁棒性和透明性的要求,该算法能够很好地解决水印的鲁棒性和透明性这对矛盾,使得水印的鲁棒性和透明性达到优化的效果。
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| 关 键 词： | 阈值化分割 小波变换 混沌加密 数字水印 |
Algorithm of colorized digital watermarking based on threshold division and wavelet |
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| Fu Wei,Huang Zhigao,Zhang Ruifang.Algorithm of colorized digital watermarking based on threshold division and wavelet[J].Electronic Measurement Technology,2006,29(6):129-131. |
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| Authors: | Fu Wei Huang Zhigao Zhang Ruifang |
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| Affiliation: | College of Information Science and Engineering, Yanshan University, Qinhuangdao 066004 |
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| Abstract: | This article presents a new algorithm of colorized digital watermarking based on threshold division and wavelet transformation which also adaptively adjusts the intensity of embed watermarking determined by the characteristics of the human vision system. Based on threshold division, we divide the watermarking into two partition of different intension in order to adapt to the invisibility and robustness characterized by the low and medium frequency bands. The proposed algorithm smoothly solved the contradict problem between robustness and crystal of watermarking. |
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| Keywords: | threshold division wavelet transformation chaotic encryption digital watermarking |
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