A new method which successfully combines the characteristics of singular val- ues and variance is developed to preprocess the host image to obtain two sub-images with different masking effect.

• 综合利用奇异值和方差的特征来对宿主图像进行预处理之后,提取出两个具有不同掩蔽效应的子图,分别对子图的奇异值和小波包系数使用抖动调制方法嵌入不同强度的水印。