| 基于HVS和DWT数字图像水印算法的研究 |
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| 引用本文： | 路染妮.基于HVS和DWT数字图像水印算法的研究[J].科技广场,2011(7):49-52. |
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| 作者姓名： | 路染妮 |
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| 作者单位： | 西安航空职业技术学院,陕西西安,710089 |
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| 摘 要： | 文章采用了一种基于离散小波(DWT)多分辨率分解的数字水印技术,研究了水印算法,将图像进行三级小波分解,产生三个高频带系列子图和一个低频带子图。由于人眼对高频信息的敏感度低于对低频信息的敏感度,因此,采用了把水印嵌入到小波图像中的高频系数中。通过MATLAB仿真实验实现了将水印信息嵌入到原始图像中的技术,再对含水印图像加椒盐噪声、高斯低通滤波和缩小50%再放大200%进行攻击以及JPEG压缩实验仿真,结果表明所提算法具有很好的视觉效果和鲁棒性。
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| 关 键 词： | 图像 数字水印 离散小波变化 鲁棒性 |
Study on Algorithm of Digital Image Watermarking Based on DWT |
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| Lu Ranni.Study on Algorithm of Digital Image Watermarking Based on DWT[J].Science Mosaic,2011(7):49-52. |
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| Authors: | Lu Ranni |
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| Institution: | Lu Ranni(Xi'an Aeronautical Polytechnic Institute,Shaanxi Xi'an 710089) |
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| Abstract: | This article use the discrete wavelet(DWT) multi-resolution decomposition of digital watermarking technology,study watermarking algorithm,Three-level wavelet decomposition of the image,generate three series of high frequency band sub-graph and a low-frequency band sub-graph.As the human eyes are sensitivity to high frequency information lower than low-frequency information,therefore,the watermark is embedded to high frequency coefficient C of the wavelet images.Achieved the technology that embed watermark i... |
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| Keywords: | Image Digital Watermarking Discrete Wavelet Transform Robustness |
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