首先对图像进行分块，分别提取每块图像的直方图不变矩，组合起来作为数字水印，然后利用奇异值分解的方法将这些水印嵌入到原图像中。

First we go on blocking to image an extract moment invariant of histogram from the blocking image and combine it as the digital watermarking.

youdao

首先对图像进行分块，分别提取每块图像的直方图不变矩，组合起来作为数字水印，然后利用奇异值分解的方法将这些水印嵌入到原图像中。

First we go on blocking to image an extract moment invariant of histogram from the blocking image and combine it as the digital watermarking.

youdao