轮廓波在数字水印中的应用

Contourlet Application in Digital Watermarking

本部分主要讨论了一种有效的多尺度方向变换——Contourlet变换的基本概念以及基于该变换的一种稳健数字水印算法。Contourlet变换在任意尺度上都能实现2的任意次方的方向分解，从而擅长于描述图像中的轮廓和纹理信息。

This paper mainly discusses a effective multi-scale direction transform -- Contourlet transform and a robust digital watermarking algorithm based on it.We can get the direction decomposition of any power of 2 in any scales through Contourlet transform,so it is good at the description of the outline and texture information of the images.