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.
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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