| 一种小波和余弦变换组合域内鲁棒的自适应零水印算法 |
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| 引用本文： | 周亚训,金炜.一种小波和余弦变换组合域内鲁棒的自适应零水印算法[J].光电工程,2011,38(5):80-85,91. |
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| 作者姓名： | 周亚训 金炜 |
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| 作者单位： | 宁波大学信息科学与工程学院; |
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| 基金项目： | 浙江省自然科学基金(Y1080778); 宁波市自然科学基金(2008A610012); 宁波大学王宽诚幸福基金资助项目 |
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| 摘 要： | 克服了传统数字水印方案在嵌入水印时要对原始图像数据进行一定修改从而导致嵌入水印图像质量下降的局限性,提出了一个基于离散小波变换和离散余弦变换组合域内鲁棒的自适应零水印算法.算法首先对原始数字图像进行适当层次的离散小波变换,并对得到的小波逼近子图进行离散余弦变换,然后依据待嵌入二值字符水印的大小和相应的系数差值要求自适应...
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| 关 键 词： | 零水印 数字图像 离散小波变换 离散余弦变换 鲁棒性 |
A Robust Adaptive Zero-watermarking Algorithm in DWT-DCT Domain |
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| ZHOU Ya-xun,JIN Wei.A Robust Adaptive Zero-watermarking Algorithm in DWT-DCT Domain[J].Opto-Electronic Engineering,2011,38(5):80-85,91. |
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| Authors: | ZHOU Ya-xun JIN Wei |
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| Affiliation: | ZHOU Ya-xun,JIN Wei ( College of Information Science and Engineering,Ningbo University,Ningbo 315211,Zhejiang Province,China ) |
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| Abstract: | In order to overcome the limitation of the watermarked image quality degradation due to the some changes of the original image data when embedding watermark in the traditional digital watermarking schemes, a robust adaptive zero-watermarking algorithm based on the combined transforms of the Discrete Wavelet Transform (DWT) and Discrete Cosine Transform (DCT) is proposed. First, the original digital image is decomposed into the appropriate levels of DWT, and the DCT is applied to the obtained wavelet approxi... |
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| Keywords: | zero-watermark digital image discrete wavelet transform discrete cosine transform robustness |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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