| 基于小波变换和置乱技术的自适应二值水印新算法 |
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| 引用本文： | 姜婷,何鲲. 基于小波变换和置乱技术的自适应二值水印新算法[J]. 安徽大学学报(自然科学版), 2009, 33(4) |
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| 作者姓名： | 姜婷 何鲲 |
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| 作者单位： | 1. 安徽经济管理学院,信息科学系,安徽,合肥,230051
2. 安徽经济管理学院,计算机工程系,安徽,合肥,230051 |
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| 摘 要： | 提出一种基于Arnold置乱和小波变换的自适应二值图像水印新算法.首先将二值水印图像进行Arnold置乱,接着将其嵌入载体图像经过小波分解后的低频系数中.嵌入时根据SOBEL算子计算出的图像块边缘点密度,将对应的小波块进行分类.然后根据人眼视觉掩蔽特性,设置不同小波块对应的低频系数的调整因子.实验结果表明,该方法嵌入的数字水印不但具有较好的不可见性,而且对图像处理有较好的鲁棒性.
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| 关 键 词： | 数字水印 图像置乱 小波变换 自适应 SOBEL |
Novel self-adaptive binary image watermarking algorithm based on DWT and scrambling technique |
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| JIANG Ting,HE Kun. Novel self-adaptive binary image watermarking algorithm based on DWT and scrambling technique[J]. Journal of Anhui University(Natural Sciences), 2009, 33(4) |
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| Authors: | JIANG Ting HE Kun |
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| Affiliation: | 1.Department of Information Science;Anhui Economic and Management College;Hefei 230051;China;2.Department of Computer Engineering;China |
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| Abstract: | A self-adaptive binary image watermarking algorithm based on Arnold scrambling and wavelet transform was proposed.Firstly,the binary watermarking image was Arnold scrambled.Then,the result was embedded into the DWT low frequency coefficient of the host image.Wavelet blocks were classified by extract feature point density of image blocks,by using SOBEL operator.According to visual masking,the different adjustment factor was used for different low frequency coefficient when watermarking was embedded.The exper... |
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| Keywords: | digital watermarking image scrambling wavelet transform self adaptive SOBEL |
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