| 低频水印算法的研究与应用 |
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| 引用本文： | 孔宪君,许宪东,王亚东. 低频水印算法的研究与应用[J]. 林业机械与木工设备, 2007, 35(2): 45-47 |
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| 作者姓名： | 孔宪君 许宪东 王亚东 |
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| 作者单位： | 黑龙江工程学院,黑龙江,哈尔滨,150050 |
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| 基金项目： | 黑龙江省教育厅科学技术研究项目 |
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| 摘 要： | 数字水印技术作为版权保护的重要手段已在各行业得到广泛研究和应用,在DCT(离散余弦变换)域水印中如何保证水印稳健性和提高水印的不可见性是关键.本文给出了具有良好不可见性的DCT域中频数字水印和较强鲁棒性的低频水印算法,以及改进低频水印不可见性的方法.
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| 关 键 词： | 数字水印 离散余弦变换 嵌入位置 拉伸因子 稳健性 |
| 文章编号： | 1001-4462（2007）02-0045-02 |
| 修稿时间： | 2006-06-21 |
DCT Watermark Based on Low and Middle Frequency |
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| KONG Xian-jun,XU Xian-dong,WANG Ya-dong. DCT Watermark Based on Low and Middle Frequency[J]. Forestry Machinery & Woodworking Equipment, 2007, 35(2): 45-47 |
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| Authors: | KONG Xian-jun XU Xian-dong WANG Ya-dong |
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| Affiliation: | Heilongjiang Institute of Technology, Heilongjiang Harbin 150050, China |
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| Abstract: | The techniques of watermarking have been widely studied and applied to protect copyright. In DCT watermark, the key is how to increase watermarking robustness and invisibility. This paper gave a middle frequency DCT watermark which has good invisibility and a low frequency DCT watermark which has strong robustness, and a adaptive method to improve the invisbility of low frequency DCT watermark. |
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| Keywords: | digital watermarking discrete cosine transformation(DCT) embedding position scaling parameter robustness |
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