On base of analysis of watermarking attacks on digital images, the paper presents a digital image copyright protection protocol based on digital watermarking technology.
在分析数字图像中数字水印所受各种攻击的基础上，给出了一个基于数字水印技术的数字图像版权保护安全协议框架。
The experiment results show that watermarking algorithms based on block SVD are very robust to usual image manipulation attacks, especially the quantization watermarking algorithm.
实验结果证明，基于块奇异值分解的水印算法对常规的图像处理攻击具有很好的鲁棒性，尤其是其中的量化水印算法。
Finally, the influence of different attacks, the various resolution levels, the intensity of watermarking and the different wavelet functions on digital image watermarking are researched.
最后，通过采用几种攻击方法、不同的小波分解层数、水印嵌入强度、不同小波基函数的选取来检测其对水印的影响。
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