A blind digital watermarking scheme based on Discrete Fourier Transform and invariant centroid, combining image preprocess and image normalization is proposed.
给出了基于离散傅立叶变换、不变质心,结合图像预处理、图像归一化技术的抗几何攻击的盲数字水印方案。
参考来源 - 基于离散傅立叶变换的图像数字水印算法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
给出的基于不变质心提取的平移估计方法，解决了原始水印图像和待测图像的平移同步问题。
One method, which estimates rotation and scaling based on template embedding, has low computing complexity for template matching.
方案利用归一化技术将原始图像映射到几何不变空间内，结合不变质心理论提取出归一化图像的重要区域；
The geometrical invariant space is constructed by using image normalization. A significant region is obtained from the normalized image by utilizing the invariant centroid theory.
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