基于多小波域双彩色图像的水印算法

本文利用多小波的优良性质结合人眼对蓝色不敏感的特性,提出了一种双彩色图像的水印算法.算法合理选择嵌入区域和嵌入强度,将彩色水印信息的各分量分别嵌入到彩色载体图像蓝色分量多小波域的中低频上,这样既可以保证算法的透明性又可以实现其鲁棒性.实验结果表明,本文算法具有透明性好、嵌入信息量大等特点,且对于多种常见攻击具有较好的鲁棒性,如：JPEG压缩、图像剪切、椒盐噪声、高斯噪声、speckle噪声、泊松噪声等.

Algorithm Based on Multiwavelet of Double Color Image Watermarking

This article provides an algorithm of double true color images digital watermark by combining the features of the excellent properties of multiwavelet and human insensitiveness to blue.The algorithm appropriately selects the embedded area and the embedded strength which makes the information of componential color watermark image embed into the blocked low and middle approximation components of blue components of color carrier image.The method may not only guarantee the transparency but realize its robustness.The experimental results show that the algorithm possesses many features,i.e.improving its transparency and embedding more information quality and its excellent robust of watermarking can protect various common attacks such as JPEG compression,cropping image,salt and pepper noise,Gaussian noise,speckle noise and poisson noise.