| 一种基于视觉模型的小波域图像盲水印算法 |
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| 引用本文： | 张维纬,冯桂,杨艺敏.一种基于视觉模型的小波域图像盲水印算法[J].计算机工程与科学,2009,31(6). |
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| 作者姓名： | 张维纬 冯桂 杨艺敏 |
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| 作者单位： | 华侨大学信息与科学工程学院,福建,泉州,362021 |
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| 摘 要： | 本文提出了一种基于混沌置乱和JND阈值的小波域图像盲水印算法.依据人眼的视觉特性,对宿主图像进行离散小波变换,在小波域子带LH2、HL2幅值较大的系数以及LL2幅值较小的系数中嵌入水印,水印的嵌入采用量化调制的方式,并取JND阈值作为量化间隔,使水印实现盲提取.实验结果表明,在一定不可见性的情况下,此算法对一些常见的水印攻击有较好的鲁棒性.
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| 关 键 词： | 水印 小波变换 JND阈值 量化调制 HVS模型 盲提取算法 |
A Blind Watermarking Algorithm Based on DWT and Visual Models |
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| ZHANG Wei-wei,FENG Gui,YANG Yi-min.A Blind Watermarking Algorithm Based on DWT and Visual Models[J].Computer Engineering & Science,2009,31(6). |
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| Authors: | ZHANG Wei-wei FENG Gui YANG Yi-min |
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| Affiliation: | School of Information Science and Technology;Huaqiao University;Quanzhou 362021;China |
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| Abstract: | The work concerns with a new blind watermarking algorithm based on JND and chaotic scrambling on discrete wavelet transform(DWT).Based on the visual masking effect of the human visual system,the proposed algorithm embeds watermarks into some big coefficients of sub-bands LH2,HL2 and some small coefficients of sub-band LL2 in the discrete wavelet domain of an image.In order to extract the watermarks without using the original image,we insert the watermarks by using quantized modulation and take JND as the qu... |
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| Keywords: | watermark DWT JND QIM HVS blind extracting algorithm |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
