摘要
提出一种基于纠错编码的小波域数字水印算法,该算法在检测时不需要原始图像,实现了盲检。算法中对水印图像进行了置乱和混沌加密处理,提高了抗几何攻击的能力和安全性,纠错编码的引入使水印抗攻击能力明显增强。实验结果表明该算法较好地保持了图像质量,对一般的信号处理,如剪切、JPEG压缩、噪声等有很好的鲁棒性。
The scheme of digital image watermarking based on wavelet and error-correcting codes is introduced,and the original image is not required for detecting the watermark.The watermarking is scrambled and encrypted by chaotic sequences to improve the capability of resisting geometrical attack- ing and security.The experimentation results show that the proposed algorithm keeps the quality of the image well and is robust against common image processing, such as cut, JPEG compress and noise.
出处
《国外电子元器件》
2006年第8期44-46,共3页
International Electronic Elements
关键词
纠错编码
小波变换
图像置乱
混沌序列
error-correcting codes
wavelet transform
image scramble
chaotic sequence
