摘要
为了达到在数字图像中加信水印的目的，采用一种基于小波域扩频水印算法。提出了算法的设计思想及嵌入和提取水印的具体思路，并在MATLAB开发工具上实现了水印的嵌入及提取。通过对该水印图像滤波、加噪及剪切，都可以比较清晰的提取水印图像，表现出及强的鲁棒性。
In order to add information in the digital image watermarking purposes, using a watermarking algorithm based on wavelet spread spectrum. Design ideas proposed algorithm and the watermark embedding and extraction of specific ideas, and the MATLAB development tools to achieve the watermark embedding and extraction. By the wa- termark image filtering, with noise and shear, can extract the watermark image clearer, strong robustness was shown.
出处
《陕西工业职业技术学院学报》
2012年第2期41-44,61,共5页
Journal of Shaanxi Polytechnic Institute
关键词
数字水印.小波分解
算法
扩频
digital watermarking
wavelet decomposition
algorithms
spread spectrum
