一种基于小波包变换的盲数字水印算法

( 1 信息工程大学测绘学院,郑州市陇海中路66号,450052;² 武汉大学遥感信息工程学院,武汉市珞喻路129号,430079;³ 95215部队,广东汕头市,515823;⁴ 西南电子电信技术研究所,成都市一环路118号,610041

详细信息

A Blind Digital Watermarking Algorithm Based on Wavelet-packet Transform

¹ Institute of Surveying and Mapping,Information Engineering University,66 Middle Longhai Road,Zhengzhou 450052,China;² School of Remote Sensing and Information Engineering,Wuhan University,129 Luoyu Road,Wuhan 430079,China;³ 95215 Troops,Shantou 515823,China;⁴ South-West Electronics Telecommunications Institute,118 Yihuan Road,Chengdu 610041,China

摘要: 提出了一种基于小波包变换的盲数字水印算法,该算法首先对图像进行小波包分解,并根据视觉感知特性将作为水印的二值图像嵌入到分解后的高频分量中,再进行小波包重构得到嵌入水印的图像。实验结果表明,该算法添加水印后的图像对于压缩、噪声、中值滤波、几何裁剪等处理具有很强的稳健性。
- 数字水印 /
- 图像处理 /
- 小波包变换 /
- 稳健性
Abstract: In this paper,a blind watermarking algorithm for digital image based on wavelet-packet transform is introduced.This algorithm manipulates the original image by wavelet-packet transform,then adds watermark onto the important wavelet coefficients located in the high frequency subband based on human visual system.The experiment results show that the watermarking is robust and practicability to the common image processing techniques.
- digital watermarking /
- image processing /
- wavelet-packet transform /
- robustness