| 一种基于视觉模型的DCT数字水印算法 |
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| 引用本文： | 周庆松,张佑生.一种基于视觉模型的DCT数字水印算法[J].淮南职业技术学院学报,2004,4(1):77-79,89. |
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| 作者姓名： | 周庆松 张佑生 |
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| 作者单位： | 合肥工业大学计算机科学与信息学院,安徽,合肥,230009 |
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| 摘 要： | 如何解决不可见性和鲁棒性之间的矛盾一直是数字水印算法的关键问题。提出了一种基于视觉模型的DCT域盲水印算法，该方法通过对视觉模型的亮度遮蔽特性和对比度遮蔽特性的研究和使用，优化了水印的嵌入位置和水印的嵌入强度，确保了水印信号能够在合适的嵌入位置上以尽可能大的嵌入强度嵌入，使得水印保持了较好不可见性的同时，其鲁棒性也得到了一定的提高。实验结果表明，该水印算法对噪音、裁剪以及压缩攻击具有较强的鲁棒性，算法是有效的。
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| 关 键 词： | 视觉模型 DCT 数字水印算法 盲水印 离散余弦变换 |
| 文章编号： | 1671-4733(2004)01-0077-03 |
| 修稿时间： | 2004年2月13日 |
A Scheme about Digital Watermark Based on DCT Domain and HVS |
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| ZHOU Qing-song,ZHANG You-sheng.A Scheme about Digital Watermark Based on DCT Domain and HVS[J].Journal of Huainan Vocational & Technical College,2004,4(1):77-79,89. |
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| Authors: | ZHOU Qing-song ZHANG You-sheng |
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| Abstract: | The key of the scheme about watermark is how to conciliate the conflict between imperception and robustness?A blind scheme about watermark based on DCT domain and HVS is put forward in the paper. The scheme makes use of the characteristics of lighteness and contrast on HVS to optimize the embedding position and intensity of watermark, which make the watermark signal be embedded in the proper position by the proper intensity, so that the watermark can keep better imperception, and at the same time, the robustness of the watermark is improved. The result of the experiment shows that the effective scheme is robust to assault of noise, cutting and compression. |
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| Keywords: | digital watermark blind watermark visual system discrete cosine transformation |
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