小波用于基于遥感影像特征的自适应二维盲水印算法

文章提出了一个有效的基于遥感影像特征的自适应二维盲水印算法。该算法使用灰度图像作为水印,将水印灰度图像进行Arnold置乱加密和小波压缩后,利用相邻特征平均值和奇偶判决法嵌入遥感影像的二阶小波变换域中所选择的子带上,且水印检测不需要原始遥感影像。攻击测试和实验结果表明,该算法具有较好的透明性,强壮性,以及水印检测结果准确,算法复杂度低等优点,对如JPEG有损压缩、中值滤波、附加噪声、伸缩、裁剪、旋转、几何变换、Stirmark攻击等各种影像处理的攻击都具有较强的鲁棒性;且嵌入水印后基本不会影响遥感影像的边缘检测和分类等一些应用。

Adaptive 2-Dimension Blind Watermarking Algorithm Based on Character of Remote Sensing Image

This article proposes an effective adaptive2-dimension blind watermarking algorithm based on character of a remote sensing image.This algorithm uses a gray image as watermarks,deals with the watermarking image by Arnold confusion and wavelet compression,and embedds it into the selected subband of wavelet transformation domain of the remote sensing image according to neighboring symbol's mean value and odd-even adjugement rule,moreover,detects watermarks without the original remote sensing image.The attack analysis and experimental results show that the water-marking algorithm is transparent and robust with accurate watermarking detecting results and low complexity,which also has strong robustness against many kinds of image processing attacks such as JPEG lossy compression,median filtering,additive noise,scaling,cropping,rotation,random geometrical transform and stirmark attack.Furthermore,after embedding watermarks,there is little influence on such applications of the remote sensing image as edge detection and image clas-sification.