论文研究以图象为载体的信息隐藏和变换域鲁棒数字水印技术。
The paper is devoted to researching information hiding technology and transform domain robust watermarking technology based on image cover.
在世界对数字版权问题的关注下，鲁棒数字水印技术得到了越来越多的重视。
Since the whole world is concerned about the digital copyright protection, the technology of robust digital watermarking catches more and more attentions.
通过改进的SIFT(尺度不变特征变换)算法提出了一种可有效抵抗几何攻击的鲁棒数字水印算法。
An effective against geometric attack robustness of digital watermarking algorithm based on improved SIFT (Scale Invariant Feature Transform) is presented.
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