| 摘要: |
| 将空域算法和频域算法有机结合，利用小波变换理论，给出了一种新的小波自适应数字图像水印算法。数值实验结果表明。嵌入水印后的图像与原始图像在视觉上无区别，该方法具有很好的不可觉察性。采用Jpeg水印信息和检测的水印信息之间的相关系数验证算法的鲁棒性，随着图像品质数的下降，相关系数略有下降，但幅度不大．表明算法具有较强的鲁棒性。 |
| 关键词: 小波 数字水印 鲁棒性 |
| DOI：10.11841/j.issn.1007-4333.2004.03.081 |
| 修订日期：2003-06-20 |
| 基金项目:国家自然科学基金资助项目 ( 10 372 0 36 )，广东省自然科学基金资助项目( 0 2 1197) |
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| An adaptive digital image watermarking algorithm |
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| Abstract: |
| Combining with the spatial domain algorithms, a new adaptive digital image watermarking algorithm was developed. The robustness of this algorithm was tested by the correlation coefficient between the watermarking signals embeded and ones detected in the Jpeg image. With the reducing of the image quality, the correlation coefficient decrease slowly, and this shows the robustness of the algorithm proposed in this paper is better. |
| Key words: wavelet,digital watermarking,robustness |
