摘要
提出了一种基于多级小波分解的复合数字水印方案。这种水印方案充分利用图像的能量分布特征,使用图像融合技术在高频部分嵌入一个小的徽标水印,使用扩频技术在低频部分嵌入一高斯分布序列。实验证明,该算法具有较好的鲁棒性和实用性。
A compound digital watermarking algorithm based on multilevel wavelet decomposition is presented.The algorithm takes full advantage of the energy distribution characteristics of image,uses image fusion technology to embed a small logo watermarking in the high frequency section,and uses spread spectrum technology to embed a Gaussian sequence in the low frequency section.The experiments show that the algorithm has good robustness and practicability.
出处
《计算机时代》
2011年第3期1-3,共3页
Computer Era
关键词
复合数字水印
图像融合
扩频技术
小波变换
compound digital watermarking
image fusion
spread spectrum technology
wavelet transform
