基于色彩分量相关性的彩色图像可擦除水印算法  

Erasable watermark algorithm for color images based on correlation of color components

作　　者：熊志勇[1] 蒋天发[1] 

机构地区：[1]中南民族大学计算机科学学院,武汉430073

出　　处：《计算机应用研究》2009年第4期1598-1600,共3页Application Research of Computers

基　　金：国家民委重点科研基金资助项目(MZY02004)

摘　　要：通过研究自然图像色彩分量之间的相关性,提出一种在彩色图像中嵌入可擦除水印的新方法。该方法在图像分块的基础上,利用色彩分量之间的相关性在每一图像块中嵌入两位水印,水印信号是用有意义的水印图像经混沌序列调制生成的二值序列,嵌入位置由绿色分量的平均值和密钥决定,具有非常好的安全性和易碎性,水印的提取和擦除不需要原始图像。实验表明,该方法嵌入的水印不可见性好,擦除水印的图像与原始图像完全一致,适合于图像的精确认证。After studying correlation of color components, presented a new erasable watermark algorithm for color images. The algorithm splited the original image to some blocks, using correlation of color compontents, embedded two bits watermark into every block, the watermark was a binary sequence based on significative watermark image which was modulated by chaotic se- quences, used key and average of green compontcnts to determine the position of watermark in the image block, which Could assure very good security for the watermark. The watermark was extracted and erased without the original unmarked image. The experiments show that the algorithm can assure good imperceptibility for watermarked image and the watermark beseem to exact authentication for image, this watermark can be successfully erased.

关 键 词：可擦除水印 色彩分量相关性 相关系数 图像认证 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]