摘要
为了提高数字水印算法的安全性和鲁棒性,在研究了各种常见的水印算法优缺点的基础上,提出了一种改进的基于魔方概念的数字水印算法。通过魔方混沌算法将原始水印转换为噪声信号,以提高水印安全性。再结合离散余弦变换(DCT)、离散小波变换(DWT)和矩阵奇异值分解(SVD)嵌入水印,以提高水印的不可见性和鲁棒性。实验结果表明,在确保不可见性的基础上,水印信息在噪声干扰、图像处理、图像压缩下具有很好的鲁棒性。
To improve security and robustness of digital watermarking algorithm,after studied various advantages and disadvantages of the common watermarking algorithm,this paper proposed an improved chaotic mixing algorithm based on the concept of Rubik＇s cube for watermarking images.First of all,obtained noise signals from the original watermark by the Rubik＇s cube algorithm to improve the security.It combined with DCT,DWT and SVD in embedding the watermark in order to improve the invisibility and robustness.Experimental results show that the algorithm has good robustness against noise,normal image processing,image compression,and also has invisibility.
出处
《计算机应用研究》
CSCD
北大核心
2011年第5期1926-1928,共3页
Application Research of Computers
关键词
数字水印
鲁棒性
魔方算法
离散余弦变换
离散小波变换
奇异值分解
digital watermarking
robust
Rubik＇s cube algorithm
discrete cosine transform（DCT）
discrete wavelet transform（DWT）
singular value decomposition（SVD）
