基于整型小波变换的彩色图像盲水印算法  

Blind digital watermarking algorithm for color image based on integer wavelet transform

作　　者：苏庆堂[1] 

机构地区：[1]鲁东大学现代教育技术教学部,山东烟台264025

出　　处：《计算机应用研究》2009年第6期2168-2169,2172,共3页Application Research of Computers

基　　金：山东省科技攻关计划资助项目(2005GG4201009);鲁东大学科研资助项目(L20076101)

摘　　要：针对多数图像水印算法将灰度图像嵌入宿主图像的研究现状,提出了一种基于整型小波变换将彩色数字水印嵌入到彩色宿主图像中的算法。本算法结合人眼的视觉掩蔽特性,实现了数字水印嵌入位置的自适应确定,同时采用量化小波系数的方法将彩色水印嵌入到彩色图像YCrCb模式的Y分量中去,彩色水印的提取不需要原始水印和原始宿主图像。实验证明,水印具有良好的不可见性,并且对常见的图像处理操作具有很强的鲁棒性。Researched most of the images watermarking methods about gray image embedded into host image at present, this paper proposed a digital watermarking algorithm for color watermark embedded to color host image based on IWT （ Integer Wavelet Transform）. According to the human visual system peculiarity and quantizing the wavelet coefficient, embedded encrypted watermark adaptively into the Y luminance component of the YCrCb mode in IWT domain. The algorithm allows extracting watermark without the help of original watermark and host image. Experiment results show that the embedded watermark is invisible and robust against common image processing.

关 键 词：彩色图像 彩色数字水印 整型小波变换 人类视觉系统 盲水印 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]