中文摘要：

针对数字水印容易遭受几何攻击的问题,提出了一种基于Harris-Laplace特征点检测的强韧性数字水印算法.首先,利用Harris-Laplace进行特征点侦测找出图像的特征点,以达到图像经过几何攻击时其缩放不变的效果.然后将所有的特征点以德劳内三角网络技术连接起来,形成一个个三角区块,最后再利用仿射转换（affine transformation）将各三角形进行微调动作,完成数字水印的嵌入.实验结果显示,该方法对于几何攻击和一般图像处理攻击都有较好的抵抗能力.

英文摘要：

To solve the problems that the digital watermark information are vulnerable to geometric attacks, a robust digital watermarking algorithm was proposed based on characteristic detection of Harris-Laplace. First of all, the image＇ s feature points, which can resist the geometric attacks, can be found by using Harris-Laplace detects. Then, all of the feature points can be connected to form a triangular block by using the technique of Delaunay trian gulation grid, and then each triangle can be fine-tuned based on the affine transformation. Finally, the watermark can be embedded into the image, and the watermarked image can be obtained. According to the experiment re-sults, the proposed scheme can resist the general image processing attacks and the geometric attacks.