摘要
运用数字信号处理方法,提出了一种以小波变换为基础的数字图像零水印算法。算法流程是:运用离散小波变换为基础,并且把混沌理论运用到零水印的构造上,将小波分解特点与混沌映射进行融合,经由置乱的版权图像与生成的序列实行异或变换,生成零水印,增强了水印的鲁棒性以及可认证性。通过实验证明,该算法能够抵抗各种常见的图像处理操作,效果良好,具有较好的鲁棒性。
This paper proposes and researches a new, better digital image zero-watermarking algorithm based on wavelet transform through digital signal processing technology. Algorithm process is as following： use discrete wavelets transform with the introduction of chaos theory in the construction of zero-watermark, XOR operate the generated sequences and scrambling copyright, then generate zero-watermark. The experimental results show that the algorithm can resist various common image processing operations worked well and has good robustness.
出处
《煤炭技术》
CAS
北大核心
2011年第11期164-165,168,共3页
Coal Technology
关键词
小波变换
数字图像
零水印算法
wavelet transform
digital images
zero-watermarking algorithms
