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| 基于提升小波的图像水印算法 | |
| 引用本文： | 李淑云,朱桂斌,杨琬. 基于提升小波的图像水印算法[J]. 通信技术, 2007, 40(12): 277-279,282 |
| 作者姓名： | 李淑云 朱桂斌 杨琬 |
| 作者单位： | 图像通信实验室,重庆通信学院研究生队,重庆,400035 |
| 摘 要： | 文中提出了一种基于能量特性分块的小波域图像水印算法，采用JPEG2000静态图像压缩标准的变换核——Daubechies9／7双正交小波进行小波变换，利用其三段低频小波系数之间的能量关系，将随机置乱的水印嵌入到图像中，并自适应调整嵌入强度因子。实验证明，该算法具有良好的不可见性和鲁棒性。 |
| 关 键 词： | 图像水印 能量特性 小波变换 自适应 置乱 |
| 文章编号： | 1002-0802（2007）12-0277-03 |
| 收稿时间： | 2007-09-17 |
| 修稿时间： | 2007-09-17 |
An Image Watermarking Algorithm Based on Lifting Wavelet Transform |
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| LI Shu-yun,ZHU Gui-bin,YANG Wan. An Image Watermarking Algorithm Based on Lifting Wavelet Transform[J]. Communications Technology, 2007, 40(12): 277-279,282 | |
| Authors: | LI Shu-yun ZHU Gui-bin YANG Wan |
| Abstract: | The image watermarking algorithm based on power characteristics block is proposed for copy protection of digital image. The image data is first converted to DWTdomain with Daubechies 9/7 used in JPGE2000, and then the low frequency coefficients are separated to blocks, Every block is separated to three, and use the power relations of the coefficients to embed the scrambled watermarking adaptively. Experimental results show the the proposed watermarking algorithm has good imperceptivity and robustness. |
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