| 一种基于HVS的彩色图像水印算法 |
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| 引用本文： | 刘利田,常建平.一种基于HVS的彩色图像水印算法[J].计算机工程,2007,33(24):144-145. |
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| 作者姓名： | 刘利田 常建平 |
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| 作者单位： | 南京航空航天大学信息科学与技术学院,南京,210016 |
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| 摘 要： | 讨论了一种将彩色水印图像嵌入到原始彩色图像中的数字水印算法。它利用人眼视觉系统特性，采用了在DWT域下按照频带重要性来嵌入水印的规则，即：水印应当首先嵌入图像小波低频系数，若有剩余，再按图像小波频带重要性的排序嵌入高频带。实验结果表明，提取的水印表现出较好的鲁棒性，且主观视觉失真较小。
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| 关 键 词： | 彩色数字水印 人眼视觉系统 DWT域 |
| 文章编号： | 1000-3428(2007)24-0144-02 |
| 修稿时间： | 2007年2月22日 |
Digital Watermark Algorithm for Color Images Based on HVS |
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| LIU Li-tian,CHANG Jian-ping.Digital Watermark Algorithm for Color Images Based on HVS[J].Computer Engineering,2007,33(24):144-145. |
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| Authors: | LIU Li-tian CHANG Jian-ping |
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| Affiliation: | College of Information Science and Technology, Nanjing University of Aeronautics & Astronautics, Nanjing 210016 |
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| Abstract: | A digital watermark algorithm by embedding a color digital watermark into an original color image is discussed.The algorithm inserts the watermarks according to the significance of subbands based on DWT and HVS,i.e.the watermarks should be embedded in the low frequency subbands,and the remains of the watermarks should be embedded in the high frequency subbands according to the significance of subbands.The simulation results demonstrate that the algorithm is robust and the extracted watermark has low visual distortion. |
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| Keywords: | color digital watermark Human Visual System(HVS) Discrete Wavelet Transform(DWT) |
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