Firstly,the information of visible digital watermarking are imbedded in low-frequency and non-detail area,then scramble the embedded image. Secondly,the technique of wavlet decompose is used to imbed the data of invisible watermarking.

• 先采用一种空间域方法在低频非细节的区域嵌入可见数字水印信息,然后将数字水印图像进行置乱处理,再应用小波分解技术嵌入不可见数字水印信息。