一种新的基于混沌序列的空间域盲水印算法

A New Blind Watermarking Algorithm in Spatial Domain Based on Chaotic Sequences

空间域上的水印算法往往不能同时有效地抵抗高斯噪声和椒盐噪声的攻击,而仅对其中的一种表现出较强的健壮性。论文基于混沌序列,提出了一种新的空间域盲水印算法。通过引入特征串的概念,算法有效地克服了空间域水印算法的上述缺点。一系列水印攻击实验表明该算法能够有效地抵抗高斯噪声和椒盐噪声的攻击,而且对诸如图像增强、锐化、滤波、剪切、JPEG压缩等一些常见的图像处理也都表现出了较好的健壮性。

Watermarking algorithms based on spatial domain are usually robust to either of attacks when confronted with the attacks of Gaussian noise and Salt ＆ Pepper noise.A new blind watermarking algorithm in spatial domain based on chaotic sequences is proposed in this paper.By the introduction of characteristic string,the algorithm overcomes the shortages above.Experimental results show that the proposed scheme can resist both of the attacks of Gaussian noise and Salt ＆ Pepper noise effectively.The algorithm is also robust for some image processing operations such as image enhancement,sharpening,filtering,cropping,lossy JPEG compression.